Investigate possible BCD improvement for Android WebView

[RupertBenWiser]

Android WebView disables a number of features at run time because it shares a build target with the Android target of Chromium:
https://source.chromium.org/chromium/chromium/src/+/main:android_webview/browser/aw_field_trials.cc

We should investigate if we can improve this detection mechanism.

[dontcallmedom]

there is also the other way around (not specific to Android): seeing what would be need to make the automated tool used to detect support for features work for WebViews

(both are probably useful independently since feature detection may not always be accurate on WebViews either - it may be particularly useful to document these situations in BCD)

[RupertBenWiser]

At least speaking for Chromium, there is apparently this cool tool that starts a shell and can detect what web APIs are exposed at runtime:
https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/webexposed/?q=webexposed&ss=chromium

We will need a bit more investigation / support from someone who understands this better - but perhaps something in that space would be more generic and applicable to WebViews as a whole? Similar to WPTs but it just relies on detecting the feature availability rather than its compliance.

[Elchi3]

I've been looking for hints at https://source.chromium.org/chromium/chromium/src/+/main:android_webview/tools/system_webview_shell/test/data/webexposed/not-webview-exposed.txt;bpv=0;bpt=0

there is also the other way around (not specific to Android): seeing what would be need to make the automated tool used to detect support for features work for WebViews

(both are probably useful independently since feature detection may not always be accurate on WebViews either - it may be particularly useful to document these situations in BCD)

Yes! I'd be very happy to investigate what we would need in the Open Web Docs BCD collector to collect correct support data for Android WebView.

Currently, if you checkout mdn/browser-compat-data and run the following command you get 874 features not supported in WebView Android.

npm run traverse -- -b webview_android -f false

Output

1. api.AbortPaymentEvent
2. api.AbortPaymentEvent.AbortPaymentEvent
3. api.AbortPaymentEvent.respondWith
4. api.AuthenticatorAssertionResponse
5. api.AuthenticatorAssertionResponse.authenticatorData
6. api.AuthenticatorAssertionResponse.signature
7. api.AuthenticatorAssertionResponse.userHandle
8. api.AuthenticatorAttestationResponse
9. api.AuthenticatorAttestationResponse.attestationObject
10. api.AuthenticatorAttestationResponse.getAuthenticatorData
11. api.AuthenticatorAttestationResponse.getPublicKey
12. api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm
13. api.AuthenticatorAttestationResponse.getTransports
14. api.AuthenticatorResponse
15. api.AuthenticatorResponse.clientDataJSON
16. api.BackgroundFetchEvent
17. api.BackgroundFetchEvent.BackgroundFetchEvent
18. api.BackgroundFetchEvent.registration
19. api.BackgroundFetchManager
20. api.BackgroundFetchManager.fetch
21. api.BackgroundFetchManager.get
22. api.BackgroundFetchManager.getIds
23. api.BackgroundFetchRecord
24. api.BackgroundFetchRecord.request
25. api.BackgroundFetchRecord.responseReady
26. api.BackgroundFetchRegistration
27. api.BackgroundFetchRegistration.abort
28. api.BackgroundFetchRegistration.downloaded
29. api.BackgroundFetchRegistration.downloadTotal
30. api.BackgroundFetchRegistration.failureReason
31. api.BackgroundFetchRegistration.id
32. api.BackgroundFetchRegistration.match
33. api.BackgroundFetchRegistration.matchAll
34. api.BackgroundFetchRegistration.progress_event
35. api.BackgroundFetchRegistration.recordsAvailable
36. api.BackgroundFetchRegistration.result
37. api.BackgroundFetchRegistration.uploaded
38. api.BackgroundFetchRegistration.uploadTotal
39. api.BackgroundFetchUpdateUIEvent
40. api.BackgroundFetchUpdateUIEvent.BackgroundFetchUpdateUIEvent
41. api.BackgroundFetchUpdateUIEvent.updateUI
42. api.Bluetooth
43. api.Bluetooth.getAvailability
44. api.Bluetooth.requestDevice
45. api.Bluetooth.requestDevice.options_exclusionFilters_parameter
46. api.Bluetooth.requestDevice.options_filter_manufacturerData_parameter
47. api.BluetoothCharacteristicProperties
48. api.BluetoothCharacteristicProperties.authenticatedSignedWrites
49. api.BluetoothCharacteristicProperties.broadcast
50. api.BluetoothCharacteristicProperties.indicate
51. api.BluetoothCharacteristicProperties.notify
52. api.BluetoothCharacteristicProperties.read
53. api.BluetoothCharacteristicProperties.reliableWrite
54. api.BluetoothCharacteristicProperties.writableAuxiliaries
55. api.BluetoothCharacteristicProperties.write
56. api.BluetoothCharacteristicProperties.writeWithoutResponse
57. api.BluetoothDevice
58. api.BluetoothDevice.gatt
59. api.BluetoothDevice.gattserverdisconnected_event
60. api.BluetoothDevice.id
61. api.BluetoothDevice.name
62. api.BluetoothRemoteGATTCharacteristic
63. api.BluetoothRemoteGATTCharacteristic.characteristicvaluechanged_event
64. api.BluetoothRemoteGATTCharacteristic.getDescriptor
65. api.BluetoothRemoteGATTCharacteristic.getDescriptors
66. api.BluetoothRemoteGATTCharacteristic.properties
67. api.BluetoothRemoteGATTCharacteristic.readValue
68. api.BluetoothRemoteGATTCharacteristic.service
69. api.BluetoothRemoteGATTCharacteristic.startNotifications
70. api.BluetoothRemoteGATTCharacteristic.stopNotifications
71. api.BluetoothRemoteGATTCharacteristic.uuid
72. api.BluetoothRemoteGATTCharacteristic.value
73. api.BluetoothRemoteGATTCharacteristic.writeValue
74. api.BluetoothRemoteGATTCharacteristic.writeValueWithoutResponse
75. api.BluetoothRemoteGATTCharacteristic.writeValueWithResponse
76. api.BluetoothRemoteGATTDescriptor
77. api.BluetoothRemoteGATTDescriptor.characteristic
78. api.BluetoothRemoteGATTDescriptor.readValue
79. api.BluetoothRemoteGATTDescriptor.uuid
80. api.BluetoothRemoteGATTDescriptor.value
81. api.BluetoothRemoteGATTDescriptor.writeValue
82. api.BluetoothRemoteGATTServer
83. api.BluetoothRemoteGATTServer.connect
84. api.BluetoothRemoteGATTServer.connected
85. api.BluetoothRemoteGATTServer.device
86. api.BluetoothRemoteGATTServer.disconnect
87. api.BluetoothRemoteGATTServer.getPrimaryService
88. api.BluetoothRemoteGATTServer.getPrimaryServices
89. api.BluetoothRemoteGATTService
90. api.BluetoothRemoteGATTService.device
91. api.BluetoothRemoteGATTService.getCharacteristic
92. api.BluetoothRemoteGATTService.getCharacteristics
93. api.BluetoothRemoteGATTService.isPrimary
94. api.BluetoothRemoteGATTService.uuid
95. api.BluetoothUUID
96. api.BluetoothUUID.canonicalUUID_static
97. api.BluetoothUUID.getCharacteristic_static
98. api.BluetoothUUID.getDescriptor_static
99. api.BluetoothUUID.getService_static
100. api.CanMakePaymentEvent
101. api.CanMakePaymentEvent.CanMakePaymentEvent
102. api.CanMakePaymentEvent.methodData
103. api.CanMakePaymentEvent.modifiers
104. api.CanMakePaymentEvent.paymentRequestOrigin
105. api.CanMakePaymentEvent.respondWith
106. api.CanMakePaymentEvent.topOrigin
107. api.CredentialsContainer.create.publicKey_option
108. api.CredentialsContainer.create.publicKey_option.extensions
109. api.CredentialsContainer.create.publicKey_option.extensions.appidExclude
110. api.CredentialsContainer.create.publicKey_option.extensions.credProps
111. api.CredentialsContainer.create.publicKey_option.extensions.credProtect
112. api.CredentialsContainer.create.publicKey_option.extensions.largeBlob
113. api.CredentialsContainer.create.publicKey_option.extensions.minPinLength
114. api.CredentialsContainer.create.publicKey_option.extensions.payment
115. api.CredentialsContainer.create.publicKey_option.requireResidentKey
116. api.CredentialsContainer.create.publicKey_option.residentKey
117. api.CredentialsContainer.get.identity_option
118. api.CredentialsContainer.get.identity_option.context_option
119. api.CredentialsContainer.get.identity_option.error_api
120. api.CredentialsContainer.get.identity_option.loginHint
121. api.CredentialsContainer.get.otp_option
122. api.CredentialsContainer.get.publicKey_option
123. api.CredentialsContainer.get.publicKey_option.extensions
124. api.CredentialsContainer.get.publicKey_option.extensions.appid
125. api.CredentialsContainer.get.publicKey_option.extensions.largeBlob
126. api.Document.exitPictureInPicture
127. api.Document.pictureInPictureElement
128. api.Document.pictureInPictureEnabled
129. api.Document.requestStorageAccess
130. api.Document.requestStorageAccess.types_parameter
131. api.Document.requestStorageAccess.types_parameter.types_all_parameter
132. api.Document.requestStorageAccess.types_parameter.types_BroadcastChannel_parameter
133. api.Document.requestStorageAccess.types_parameter.types_caches_parameter
134. api.Document.requestStorageAccess.types_parameter.types_cookies_parameter
135. api.Document.requestStorageAccess.types_parameter.types_createObjectURL_parameter
136. api.Document.requestStorageAccess.types_parameter.types_estimate_parameter
137. api.Document.requestStorageAccess.types_parameter.types_getDirectory_parameter
138. api.Document.requestStorageAccess.types_parameter.types_indexedDB_parameter
139. api.Document.requestStorageAccess.types_parameter.types_localStorage_parameter
140. api.Document.requestStorageAccess.types_parameter.types_locks_parameter
141. api.Document.requestStorageAccess.types_parameter.types_revokeObjectURL_parameter
142. api.Document.requestStorageAccess.types_parameter.types_sessionStorage_parameter
143. api.Document.requestStorageAccessFor
144. api.FileSystemDirectoryHandle
145. api.FileSystemDirectoryHandle.entries
146. api.FileSystemDirectoryHandle.getDirectoryHandle
147. api.FileSystemDirectoryHandle.getFileHandle
148. api.FileSystemDirectoryHandle.keys
149. api.FileSystemDirectoryHandle.removeEntry
150. api.FileSystemDirectoryHandle.resolve
151. api.FileSystemDirectoryHandle.values
152. api.FileSystemDirectoryHandle.@@asynciterator
153. api.FileSystemFileHandle.createWritable
154. api.FileSystemFileHandle.getFile
155. api.FileSystemHandle
156. api.FileSystemHandle.isSameEntry
157. api.FileSystemHandle.kind
158. api.FileSystemHandle.name
159. api.FileSystemHandle.queryPermission
160. api.FileSystemHandle.remove
161. api.FileSystemHandle.requestPermission
162. api.FontFaceSetLoadEvent.worker_support
163. api.Gamepad.displayId
164. api.Gamepad.vibrationActuator
165. api.GeolocationCoordinates.secure_context_required
166. api.HTMLIFrameElement.allowPaymentRequest
167. api.HTMLInputElement.webkitEntries
168. api.HTMLMediaElement.disableRemotePlayback
169. api.HTMLMediaElement.remote
170. api.HTMLVideoElement.disablePictureInPicture
171. api.HTMLVideoElement.enterpictureinpicture_event
172. api.HTMLVideoElement.leavepictureinpicture_event
173. api.HTMLVideoElement.requestPictureInPicture
174. api.IdentityCredential
175. api.IdentityCredential.disconnect_static
176. api.IdentityCredential.isAutoSelected
177. api.IdentityCredential.token
178. api.IdentityProvider
179. api.IdentityProvider.close_static
180. api.IdentityProvider.getUserInfo_static
181. api.MediaMetadata
182. api.MediaMetadata.MediaMetadata
183. api.MediaMetadata.album
184. api.MediaMetadata.artist
185. api.MediaMetadata.artwork
186. api.MediaMetadata.chapterInfo
187. api.MediaMetadata.title
188. api.MediaSession
189. api.MediaSession.metadata
190. api.MediaSession.playbackState
191. api.MediaSession.setActionHandler
192. api.MediaSession.setActionHandler.hangup_type
193. api.MediaSession.setActionHandler.nextslide_type
194. api.MediaSession.setActionHandler.nexttrack_type
195. api.MediaSession.setActionHandler.pause_type
196. api.MediaSession.setActionHandler.play_type
197. api.MediaSession.setActionHandler.previousslide_type
198. api.MediaSession.setActionHandler.previoustrack_type
199. api.MediaSession.setActionHandler.seekbackward_type
200. api.MediaSession.setActionHandler.seekforward_type
201. api.MediaSession.setActionHandler.seekto_type
202. api.MediaSession.setActionHandler.stop_type
203. api.MediaSession.setActionHandler.togglecamera_type
204. api.MediaSession.setActionHandler.togglemicrophone_type
205. api.MediaSession.setCameraActive
206. api.MediaSession.setMicrophoneActive
207. api.MediaSession.setPositionState
208. api.Metadata
209. api.Metadata.modificationTime
210. api.Metadata.size
211. api.Navigator.activeVRDisplays
212. api.Navigator.bluetooth
213. api.Navigator.canShare
214. api.Navigator.canShare.data_files_parameter
215. api.Navigator.canShare.data_text_parameter
216. api.Navigator.getInstalledRelatedApps
217. api.Navigator.getVRDisplays
218. api.Navigator.login
219. api.Navigator.mediaSession
220. api.Navigator.permissions
221. api.Navigator.presentation
222. api.Navigator.share
223. api.Navigator.share.data_files_parameter
224. api.Navigator.share.data_text_parameter
225. api.Navigator.usb
226. api.Navigator.xr
227. api.NavigatorLogin
228. api.NavigatorLogin.setStatus
229. api.NavigatorUAData
230. api.NavigatorUAData.brands
231. api.NavigatorUAData.getHighEntropyValues
232. api.NavigatorUAData.mobile
233. api.NavigatorUAData.platform
234. api.NavigatorUAData.toJSON
235. api.Notification
236. api.Notification.secure_context_required
237. api.Notification.worker_support
238. api.Notification.actions
239. api.Notification.badge
240. api.Notification.body
241. api.Notification.click_event
242. api.Notification.close
243. api.Notification.close_event
244. api.Notification.data
245. api.Notification.dir
246. api.Notification.error_event
247. api.Notification.icon
248. api.Notification.image
249. api.Notification.lang
250. api.Notification.maxActions_static
251. api.Notification.permission_static
252. api.Notification.renotify
253. api.Notification.requestPermission_static
254. api.Notification.requireInteraction
255. api.Notification.show_event
256. api.Notification.silent
257. api.Notification.tag
258. api.Notification.timestamp
259. api.Notification.title
260. api.Notification.vibrate
261. api.NotificationEvent
262. api.NotificationEvent.NotificationEvent
263. api.NotificationEvent.action
264. api.NotificationEvent.notification
265. api.OTPCredential
266. api.OTPCredential.code
267. api.OffscreenCanvas.convertToBlob.option_type_parameter_webp
268. api.OffscreenCanvas.getContext.bitmaprenderer_context
269. api.OffscreenCanvas.getContext.webgl_context
270. api.OffscreenCanvas.getContext.webgl2_context
271. api.OffscreenCanvas.getContext.2d_context
272. api.PaymentAddress
273. api.PaymentAddress.addressLine
274. api.PaymentAddress.city
275. api.PaymentAddress.country
276. api.PaymentAddress.dependentLocality
277. api.PaymentAddress.organization
278. api.PaymentAddress.phone
279. api.PaymentAddress.postalCode
280. api.PaymentAddress.recipient
281. api.PaymentAddress.region
282. api.PaymentAddress.sortingCode
283. api.PaymentAddress.toJSON
284. api.PaymentInstruments
285. api.PaymentInstruments.clear
286. api.PaymentInstruments.delete
287. api.PaymentInstruments.get
288. api.PaymentInstruments.has
289. api.PaymentInstruments.keys
290. api.PaymentInstruments.set
291. api.PaymentManager
292. api.PaymentManager.enableDelegations
293. api.PaymentManager.instruments
294. api.PaymentManager.userHint
295. api.PaymentMethodChangeEvent
296. api.PaymentMethodChangeEvent.PaymentMethodChangeEvent
297. api.PaymentMethodChangeEvent.methodDetails
298. api.PaymentMethodChangeEvent.methodName
299. api.PaymentRequest
300. api.PaymentRequest.PaymentRequest
301. api.PaymentRequest.PaymentRequest.secure_payment_confirmation_method
302. api.PaymentRequest.abort
303. api.PaymentRequest.canMakePayment
304. api.PaymentRequest.id
305. api.PaymentRequest.paymentmethodchange_event
306. api.PaymentRequest.shippingAddress
307. api.PaymentRequest.shippingaddresschange_event
308. api.PaymentRequest.shippingOption
309. api.PaymentRequest.shippingoptionchange_event
310. api.PaymentRequest.shippingType
311. api.PaymentRequest.show
312. api.PaymentRequestEvent
313. api.PaymentRequestEvent.PaymentRequestEvent
314. api.PaymentRequestEvent.changePaymentMethod
315. api.PaymentRequestEvent.changeShippingAddress
316. api.PaymentRequestEvent.changeShippingOption
317. api.PaymentRequestEvent.instrumentKey
318. api.PaymentRequestEvent.methodData
319. api.PaymentRequestEvent.modifiers
320. api.PaymentRequestEvent.openWindow
321. api.PaymentRequestEvent.paymentOptions
322. api.PaymentRequestEvent.paymentRequestId
323. api.PaymentRequestEvent.paymentRequestOrigin
324. api.PaymentRequestEvent.respondWith
325. api.PaymentRequestEvent.shippingOptions
326. api.PaymentRequestEvent.topOrigin
327. api.PaymentRequestEvent.total
328. api.PaymentRequestUpdateEvent
329. api.PaymentRequestUpdateEvent.PaymentRequestUpdateEvent
330. api.PaymentRequestUpdateEvent.updateWith
331. api.PaymentResponse
332. api.PaymentResponse.complete
333. api.PaymentResponse.details
334. api.PaymentResponse.methodName
335. api.PaymentResponse.payerdetailchange_event
336. api.PaymentResponse.payerEmail
337. api.PaymentResponse.payerName
338. api.PaymentResponse.payerPhone
339. api.PaymentResponse.requestId
340. api.PaymentResponse.retry
341. api.PaymentResponse.shippingAddress
342. api.PaymentResponse.shippingOption
343. api.PaymentResponse.toJSON
344. api.PeriodicSyncEvent
345. api.PeriodicSyncEvent.PeriodicSyncEvent
346. api.PeriodicSyncEvent.tag
347. api.PeriodicSyncManager
348. api.PeriodicSyncManager.getTags
349. api.PeriodicSyncManager.register
350. api.PeriodicSyncManager.unregister
351. api.PermissionStatus
352. api.PermissionStatus.change_event
353. api.PermissionStatus.name
354. api.PermissionStatus.state
355. api.Permissions
356. api.Permissions.permission_accelerometer
357. api.Permissions.permission_accessibility-events
358. api.Permissions.permission_background-sync
359. api.Permissions.permission_bluetooth
360. api.Permissions.permission_camera
361. api.Permissions.permission_clipboard-read
362. api.Permissions.permission_clipboard-write
363. api.Permissions.permission_geolocation
364. api.Permissions.permission_gyroscope
365. api.Permissions.permission_magnetometer
366. api.Permissions.permission_microphone
367. api.Permissions.permission_midi
368. api.Permissions.permission_notifications
369. api.Permissions.permission_payment-handler
370. api.Permissions.permission_persistent-storage
371. api.Permissions.permission_push
372. api.Permissions.permission_screen-wake-lock
373. api.Permissions.permission_storage-access
374. api.Permissions.permission_top-level-storage-access
375. api.Permissions.query
376. api.PictureInPictureEvent
377. api.PictureInPictureEvent.PictureInPictureEvent
378. api.PictureInPictureEvent.pictureInPictureWindow
379. api.PictureInPictureWindow
380. api.PictureInPictureWindow.height
381. api.PictureInPictureWindow.resize_event
382. api.PictureInPictureWindow.width
383. api.Presentation
384. api.Presentation.defaultRequest
385. api.Presentation.receiver
386. api.PresentationAvailability
387. api.PresentationAvailability.change_event
388. api.PresentationAvailability.value
389. api.PresentationConnection
390. api.PresentationConnection.binaryType
391. api.PresentationConnection.close
392. api.PresentationConnection.close_event
393. api.PresentationConnection.connect_event
394. api.PresentationConnection.id
395. api.PresentationConnection.message_event
396. api.PresentationConnection.send
397. api.PresentationConnection.state
398. api.PresentationConnection.terminate
399. api.PresentationConnection.terminate_event
400. api.PresentationConnection.url
401. api.PresentationConnectionAvailableEvent
402. api.PresentationConnectionAvailableEvent.PresentationConnectionAvailableEvent
403. api.PresentationConnectionAvailableEvent.connection
404. api.PresentationConnectionCloseEvent
405. api.PresentationConnectionCloseEvent.PresentationConnectionCloseEvent
406. api.PresentationConnectionCloseEvent.message
407. api.PresentationConnectionCloseEvent.reason
408. api.PresentationConnectionList
409. api.PresentationConnectionList.connectionavailable_event
410. api.PresentationConnectionList.connections
411. api.PresentationReceiver
412. api.PresentationReceiver.connectionList
413. api.PresentationRequest
414. api.PresentationRequest.PresentationRequest
415. api.PresentationRequest.secure_context_required
416. api.PresentationRequest.connectionavailable_event
417. api.PresentationRequest.getAvailability
418. api.PresentationRequest.reconnect
419. api.PresentationRequest.start
420. api.PublicKeyCredential
421. api.PublicKeyCredential.authenticatorAttachment
422. api.PublicKeyCredential.getClientExtensionResults
423. api.PublicKeyCredential.isConditionalMediationAvailable_static
424. api.PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable_static
425. api.PublicKeyCredential.rawId
426. api.PublicKeyCredential.response
427. api.PushEvent
428. api.PushEvent.PushEvent
429. api.PushEvent.data
430. api.PushManager
431. api.PushManager.getSubscription
432. api.PushManager.hasPermission
433. api.PushManager.permissionState
434. api.PushManager.register
435. api.PushManager.registrations
436. api.PushManager.subscribe
437. api.PushManager.supportedContentEncodings_static
438. api.PushManager.unregister
439. api.PushMessageData
440. api.PushMessageData.arrayBuffer
441. api.PushMessageData.blob
442. api.PushMessageData.json
443. api.PushMessageData.text
444. api.PushSubscription
445. api.PushSubscription.endpoint
446. api.PushSubscription.expirationTime
447. api.PushSubscription.getKey
448. api.PushSubscription.options
449. api.PushSubscription.subscriptionId
450. api.PushSubscription.toJSON
451. api.PushSubscription.unsubscribe
452. api.PushSubscriptionOptions
453. api.PushSubscriptionOptions.applicationServerKey
454. api.PushSubscriptionOptions.userVisibleOnly
455. api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.credential_parameter
456. api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.url_parameter
457. api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.urls_parameter
458. api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.username_parameter
459. api.RemotePlayback
460. api.RemotePlayback.cancelWatchAvailability
461. api.RemotePlayback.connect_event
462. api.RemotePlayback.connecting_event
463. api.RemotePlayback.disconnect_event
464. api.RemotePlayback.prompt
465. api.RemotePlayback.state
466. api.RemotePlayback.watchAvailability
467. api.Request.mode.navigate_mode
468. api.ServiceWorkerGlobalScope.abortpayment_event
469. api.ServiceWorkerGlobalScope.backgroundfetchabort_event
470. api.ServiceWorkerGlobalScope.backgroundfetchclick_event
471. api.ServiceWorkerGlobalScope.backgroundfetchfail_event
472. api.ServiceWorkerGlobalScope.backgroundfetchsuccess_event
473. api.ServiceWorkerGlobalScope.canmakepayment_event
474. api.ServiceWorkerGlobalScope.paymentrequest_event
475. api.ServiceWorkerGlobalScope.periodicsync_event
476. api.ServiceWorkerRegistration.backgroundFetch
477. api.ServiceWorkerRegistration.getNotifications
478. api.ServiceWorkerRegistration.paymentManager
479. api.ServiceWorkerRegistration.pushManager
480. api.ServiceWorkerRegistration.showNotification
481. api.ServiceWorkerRegistration.showNotification.options_actions_parameter
482. api.ServiceWorkerRegistration.showNotification.options_badge_parameter
483. api.ServiceWorkerRegistration.showNotification.options_data_parameter
484. api.ServiceWorkerRegistration.showNotification.options_image_parameter
485. api.ServiceWorkerRegistration.showNotification.options_renotify_parameter
486. api.ServiceWorkerRegistration.showNotification.options_requireInteraction_parameter
487. api.ServiceWorkerRegistration.showNotification.options_vibrate_parameter
488. api.SpeechGrammar
489. api.SpeechGrammar.SpeechGrammar
490. api.SpeechGrammar.src
491. api.SpeechGrammar.weight
492. api.SpeechSynthesis
493. api.SpeechSynthesis.cancel
494. api.SpeechSynthesis.getVoices
495. api.SpeechSynthesis.pause
496. api.SpeechSynthesis.paused
497. api.SpeechSynthesis.pending
498. api.SpeechSynthesis.resume
499. api.SpeechSynthesis.speak
500. api.SpeechSynthesis.speaking
501. api.SpeechSynthesis.voiceschanged_event
502. api.SpeechSynthesisErrorEvent
503. api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent
504. api.SpeechSynthesisErrorEvent.error
505. api.SpeechSynthesisEvent
506. api.SpeechSynthesisEvent.SpeechSynthesisEvent
507. api.SpeechSynthesisEvent.charIndex
508. api.SpeechSynthesisEvent.charLength
509. api.SpeechSynthesisEvent.elapsedTime
510. api.SpeechSynthesisEvent.elapsedTime.milliseconds
511. api.SpeechSynthesisEvent.name
512. api.SpeechSynthesisEvent.utterance
513. api.SpeechSynthesisUtterance
514. api.SpeechSynthesisUtterance.SpeechSynthesisUtterance
515. api.SpeechSynthesisUtterance.boundary_event
516. api.SpeechSynthesisUtterance.end_event
517. api.SpeechSynthesisUtterance.error_event
518. api.SpeechSynthesisUtterance.lang
519. api.SpeechSynthesisUtterance.mark_event
520. api.SpeechSynthesisUtterance.pause_event
521. api.SpeechSynthesisUtterance.pitch
522. api.SpeechSynthesisUtterance.rate
523. api.SpeechSynthesisUtterance.resume_event
524. api.SpeechSynthesisUtterance.start_event
525. api.SpeechSynthesisUtterance.text
526. api.SpeechSynthesisUtterance.voice
527. api.SpeechSynthesisUtterance.volume
528. api.SpeechSynthesisVoice
529. api.SpeechSynthesisVoice.default
530. api.SpeechSynthesisVoice.lang
531. api.SpeechSynthesisVoice.localService
532. api.SpeechSynthesisVoice.name
533. api.SpeechSynthesisVoice.voiceURI
534. api.StorageAccessHandle
535. api.StorageAccessHandle.BroadcastChannel
536. api.StorageAccessHandle.caches
537. api.StorageAccessHandle.createObjectURL
538. api.StorageAccessHandle.estimate
539. api.StorageAccessHandle.getDirectory
540. api.StorageAccessHandle.indexedDB
541. api.StorageAccessHandle.localStorage
542. api.StorageAccessHandle.locks
543. api.StorageAccessHandle.revokeObjectURL
544. api.StorageAccessHandle.sessionStorage
545. api.USB
546. api.USB.connect_event
547. api.USB.disconnect_event
548. api.USB.getDevices
549. api.USB.requestDevice
550. api.USBAlternateInterface
551. api.USBAlternateInterface.USBAlternateInterface
552. api.USBAlternateInterface.alternateSetting
553. api.USBAlternateInterface.endpoints
554. api.USBAlternateInterface.interfaceClass
555. api.USBAlternateInterface.interfaceName
556. api.USBAlternateInterface.interfaceProtocol
557. api.USBAlternateInterface.interfaceSubclass
558. api.USBConfiguration
559. api.USBConfiguration.USBConfiguration
560. api.USBConfiguration.configurationName
561. api.USBConfiguration.configurationValue
562. api.USBConfiguration.interfaces
563. api.USBConnectionEvent
564. api.USBConnectionEvent.USBConnectionEvent
565. api.USBConnectionEvent.device
566. api.USBDevice
567. api.USBDevice.claimInterface
568. api.USBDevice.clearHalt
569. api.USBDevice.close
570. api.USBDevice.configuration
571. api.USBDevice.configurations
572. api.USBDevice.controlTransferIn
573. api.USBDevice.controlTransferOut
574. api.USBDevice.deviceClass
575. api.USBDevice.deviceProtocol
576. api.USBDevice.deviceSubclass
577. api.USBDevice.deviceVersionMajor
578. api.USBDevice.deviceVersionMinor
579. api.USBDevice.deviceVersionSubminor
580. api.USBDevice.forget
581. api.USBDevice.isochronousTransferIn
582. api.USBDevice.isochronousTransferOut
583. api.USBDevice.manufacturerName
584. api.USBDevice.open
585. api.USBDevice.opened
586. api.USBDevice.productId
587. api.USBDevice.productName
588. api.USBDevice.releaseInterface
589. api.USBDevice.reset
590. api.USBDevice.selectAlternateInterface
591. api.USBDevice.selectConfiguration
592. api.USBDevice.serialNumber
593. api.USBDevice.transferIn
594. api.USBDevice.transferOut
595. api.USBDevice.usbVersionMajor
596. api.USBDevice.usbVersionMinor
597. api.USBDevice.usbVersionSubminor
598. api.USBDevice.vendorId
599. api.USBEndpoint
600. api.USBEndpoint.USBEndpoint
601. api.USBEndpoint.direction
602. api.USBEndpoint.endpointNumber
603. api.USBEndpoint.packetSize
604. api.USBEndpoint.type
605. api.USBInTransferResult
606. api.USBInTransferResult.USBInTransferResult
607. api.USBInTransferResult.data
608. api.USBInTransferResult.status
609. api.USBInterface
610. api.USBInterface.USBInterface
611. api.USBInterface.alternate
612. api.USBInterface.alternates
613. api.USBInterface.claimed
614. api.USBInterface.interfaceNumber
615. api.USBIsochronousInTransferPacket
616. api.USBIsochronousInTransferPacket.USBIsochronousInTransferPacket
617. api.USBIsochronousInTransferPacket.data
618. api.USBIsochronousInTransferPacket.status
619. api.USBIsochronousInTransferResult
620. api.USBIsochronousInTransferResult.USBIsochronousInTransferResult
621. api.USBIsochronousInTransferResult.data
622. api.USBIsochronousInTransferResult.packets
623. api.USBIsochronousOutTransferPacket
624. api.USBIsochronousOutTransferPacket.USBIsochronousOutTransferPacket
625. api.USBIsochronousOutTransferPacket.bytesWritten
626. api.USBIsochronousOutTransferPacket.status
627. api.USBIsochronousOutTransferResult
628. api.USBIsochronousOutTransferResult.USBIsochronousOutTransferResult
629. api.USBIsochronousOutTransferResult.packets
630. api.USBOutTransferResult
631. api.USBOutTransferResult.USBOutTransferResult
632. api.USBOutTransferResult.bytesWritten
633. api.USBOutTransferResult.status
634. api.WebGL2RenderingContext.makeXRCompatible
635. api.WebGLRenderingContext.makeXRCompatible
636. api.Window.getDigitalGoodsService
637. api.Window.speechSynthesis
638. api.Window.vrdisplaydisconnect_event
639. api.Window.vrdisplaypresentchange_event
640. api.WorkerNavigator.permissions
641. api.WorkerNavigator.usb
642. api.WorkerNavigator.userAgentData
643. api.XRAnchor
644. api.XRAnchor.anchorSpace
645. api.XRAnchor.delete
646. api.XRAnchorSet
647. api.XRAnchorSet.entries
648. api.XRAnchorSet.forEach
649. api.XRAnchorSet.has
650. api.XRAnchorSet.keys
651. api.XRAnchorSet.size
652. api.XRAnchorSet.values
653. api.XRAnchorSet.@@iterator
654. api.XRBoundedReferenceSpace
655. api.XRBoundedReferenceSpace.boundsGeometry
656. api.XRCPUDepthInformation
657. api.XRCPUDepthInformation.data
658. api.XRCPUDepthInformation.getDepthInMeters
659. api.XRCamera
660. api.XRCamera.height
661. api.XRCamera.width
662. api.XRDepthInformation
663. api.XRDepthInformation.height
664. api.XRDepthInformation.normDepthBufferFromNormView
665. api.XRDepthInformation.rawValueToMeters
666. api.XRDepthInformation.width
667. api.XRFrame
668. api.XRFrame.createAnchor
669. api.XRFrame.getDepthInformation
670. api.XRFrame.getHitTestResults
671. api.XRFrame.getHitTestResultsForTransientInput
672. api.XRFrame.getLightEstimate
673. api.XRFrame.getPose
674. api.XRFrame.getViewerPose
675. api.XRFrame.session
676. api.XRFrame.trackedAnchors
677. api.XRHitTestResult
678. api.XRHitTestResult.createAnchor
679. api.XRHitTestResult.getPose
680. api.XRHitTestSource
681. api.XRHitTestSource.cancel
682. api.XRInputSource
683. api.XRInputSource.gamepad
684. api.XRInputSource.gripSpace
685. api.XRInputSource.handedness
686. api.XRInputSource.profiles
687. api.XRInputSource.targetRayMode
688. api.XRInputSource.targetRaySpace
689. api.XRInputSourceArray
690. api.XRInputSourceArray.entries
691. api.XRInputSourceArray.forEach
692. api.XRInputSourceArray.keys
693. api.XRInputSourceArray.length
694. api.XRInputSourceArray.values
695. api.XRInputSourceArray.@@iterator
696. api.XRInputSourceEvent
697. api.XRInputSourceEvent.XRInputSourceEvent
698. api.XRInputSourceEvent.frame
699. api.XRInputSourceEvent.inputSource
700. api.XRInputSourcesChangeEvent
701. api.XRInputSourcesChangeEvent.XRInputSourcesChangeEvent
702. api.XRInputSourcesChangeEvent.added
703. api.XRInputSourcesChangeEvent.removed
704. api.XRInputSourcesChangeEvent.session
705. api.XRLightEstimate
706. api.XRLightEstimate.primaryLightDirection
707. api.XRLightEstimate.primaryLightIntensity
708. api.XRLightEstimate.sphericalHarmonicsCoefficients
709. api.XRLightProbe
710. api.XRLightProbe.probeSpace
711. api.XRLightProbe.reflectionchange_event
712. api.XRPose
713. api.XRPose.angularVelocity
714. api.XRPose.emulatedPosition
715. api.XRPose.linearVelocity
716. api.XRPose.transform
717. api.XRRay
718. api.XRRay.XRRay
719. api.XRRay.direction
720. api.XRRay.matrix
721. api.XRRay.origin
722. api.XRReferenceSpace
723. api.XRReferenceSpace.getOffsetReferenceSpace
724. api.XRReferenceSpace.reset_event
725. api.XRReferenceSpaceEvent
726. api.XRReferenceSpaceEvent.XRReferenceSpaceEvent
727. api.XRReferenceSpaceEvent.referenceSpace
728. api.XRReferenceSpaceEvent.transform
729. api.XRRenderState
730. api.XRRenderState.baseLayer
731. api.XRRenderState.depthFar
732. api.XRRenderState.depthNear
733. api.XRRenderState.inlineVerticalFieldOfView
734. api.XRRigidTransform
735. api.XRRigidTransform.XRRigidTransform
736. api.XRRigidTransform.inverse
737. api.XRRigidTransform.matrix
738. api.XRRigidTransform.orientation
739. api.XRRigidTransform.position
740. api.XRSession
741. api.XRSession.cancelAnimationFrame
742. api.XRSession.depthDataFormat
743. api.XRSession.depthUsage
744. api.XRSession.domOverlayState
745. api.XRSession.enabledFeatures
746. api.XRSession.end
747. api.XRSession.end_event
748. api.XRSession.environmentBlendMode
749. api.XRSession.inputSources
750. api.XRSession.inputsourceschange_event
751. api.XRSession.interactionMode
752. api.XRSession.preferredReflectionFormat
753. api.XRSession.renderState
754. api.XRSession.requestAnimationFrame
755. api.XRSession.requestHitTestSource
756. api.XRSession.requestHitTestSourceForTransientInput
757. api.XRSession.requestLightProbe
758. api.XRSession.requestReferenceSpace
759. api.XRSession.select_event
760. api.XRSession.selectend_event
761. api.XRSession.selectstart_event
762. api.XRSession.squeeze_event
763. api.XRSession.squeezeend_event
764. api.XRSession.squeezestart_event
765. api.XRSession.updateRenderState
766. api.XRSession.visibilitychange_event
767. api.XRSession.visibilityState
768. api.XRSessionEvent
769. api.XRSessionEvent.XRSessionEvent
770. api.XRSessionEvent.session
771. api.XRSpace
772. api.XRSystem
773. api.XRSystem.devicechange_event
774. api.XRSystem.isSessionSupported
775. api.XRSystem.requestSession
776. api.XRTransientInputHitTestResult
777. api.XRTransientInputHitTestResult.inputSource
778. api.XRTransientInputHitTestResult.results
779. api.XRTransientInputHitTestSource
780. api.XRTransientInputHitTestSource.cancel
781. api.XRView
782. api.XRView.camera
783. api.XRView.eye
784. api.XRView.isFirstPersonObserver
785. api.XRView.projectionMatrix
786. api.XRView.recommendedViewportScale
787. api.XRView.requestViewportScale
788. api.XRView.transform
789. api.XRViewerPose
790. api.XRViewerPose.views
791. api.XRViewport
792. api.XRViewport.height
793. api.XRViewport.width
794. api.XRViewport.x
795. api.XRViewport.y
796. api.XRWebGLBinding.getCameraImage
797. api.XRWebGLBinding.getDepthInformation
798. api.XRWebGLBinding.getReflectionCubeMap
799. api.XRWebGLDepthInformation
800. api.XRWebGLDepthInformation.texture
801. api.XRWebGLLayer
802. api.XRWebGLLayer.XRWebGLLayer
803. api.XRWebGLLayer.antialias
804. api.XRWebGLLayer.framebuffer
805. api.XRWebGLLayer.framebufferHeight
806. api.XRWebGLLayer.framebufferWidth
807. api.XRWebGLLayer.getNativeFramebufferScaleFactor_static
808. api.XRWebGLLayer.getViewport
809. api.XRWebGLLayer.ignoreDepthValues
810. css.at-rules.media.prefers-reduced-data
811. css.properties.align-content.flex_context.last_baseline
812. css.properties.custom-property.env.titlebar-area-height
813. css.properties.custom-property.env.titlebar-area-width
814. css.properties.custom-property.env.titlebar-area-x
815. css.properties.custom-property.env.titlebar-area-y
816. css.properties.font-variant.greek_accented_characters
817. css.properties.scrollbar-color
818. css.properties.scrollbar-color.auto
819. css.properties.scrollbar-width
820. css.properties.scrollbar-width.auto
821. css.properties.scrollbar-width.none
822. css.properties.scrollbar-width.thin
823. html.elements.area.implicit_noopener
824. html.elements.audio.disableremoteplayback
825. html.elements.form.autocomplete.one-time-code
826. html.elements.iframe.sandbox.allow-presentation
827. html.elements.meta.name.theme-color
828. html.elements.meter
829. html.elements.meter.high
830. html.elements.meter.low
831. html.elements.meter.max
832. html.elements.meter.min
833. html.elements.meter.optimum
834. html.elements.meter.value
835. html.elements.textarea.autocomplete.one-time-code
836. html.elements.video.disablepictureinpicture
837. html.elements.video.disableremoteplayback
838. html.manifest.display_override
839. html.manifest.display_override.tabbed
840. html.manifest.protocol_handlers
841. html.manifest.protocol_handlers.protocol
842. html.manifest.protocol_handlers.url
843. html.manifest.serviceworker
844. html.manifest.serviceworker.scope
845. html.manifest.serviceworker.src
846. html.manifest.serviceworker.use_cache
847. html.manifest.share_target
848. http.data-url.top_level_navigation_blocked
849. http.headers.Cross-Origin-Opener-Policy
850. http.headers.Expect-CT
851. http.headers.Permissions-Policy.identity-credentials-get
852. http.headers.Permissions-Policy.magnetometer
853. http.headers.Permissions-Policy.otp-credentials
854. http.headers.Permissions-Policy.usb
855. http.headers.Permissions-Policy.window-management
856. http.headers.Permissions-Policy.xr-spatial-tracking
857. http.headers.Set-Cookie.Partitioned
858. http.headers.Set-Cookie.SameSite.schemeful
859. http.headers.Set-Login
860. http.headers.X-XSS-Protection
861. javascript.builtins.SharedArrayBuffer
862. javascript.builtins.SharedArrayBuffer.SharedArrayBuffer
863. javascript.builtins.SharedArrayBuffer.SharedArrayBuffer.maxByteLength_option
864. javascript.builtins.SharedArrayBuffer.byteLength
865. javascript.builtins.SharedArrayBuffer.grow
866. javascript.builtins.SharedArrayBuffer.growable
867. javascript.builtins.SharedArrayBuffer.maxByteLength
868. javascript.builtins.SharedArrayBuffer.slice
869. javascript.builtins.SharedArrayBuffer.@@species
870. javascript.builtins.String.localeCompare.locales_parameter
871. javascript.builtins.String.localeCompare.options_parameter
872. svg.global_attributes.paint-order
873. webassembly.api.Memory.Memory.shared
874. webassembly.threads-and-atomics

[Elchi3]

Also, we have a few open PRs that are in need of review (for me or anyone who likes) https://github.com/mdn/browser-compat-data/pulls?q=is%3Apr+is%3Aopen+webview

(issues too: https://github.com/mdn/browser-compat-data/issues?q=is%3Aissue+is%3Aopen+webview)

[Elchi3]

Updated the list above. Privacy sandbox related APIs aren't supported, see mdn/browser-compat-data#22294.