Change the way how airplane mode is set, since it has been moved to

Settings.Global namespace. Also run as a system app, since only system
apps can change airplane mode.

Change-Id: I317f9c94361cfca182356fd292e5b0b41553d1ab

Author: Tsu Chiang Chuang

core/tests/hosttests/test-apps/DownloadManagerTestApp/Android.mk

@@ -25,4 +25,11 @@ LOCAL_SDK_VERSION := current
 
 LOCAL_PACKAGE_NAME := DownloadManagerTestApp
 
+ifneq ($(TARGET_BUILD_VARIANT),user)
+# Need to run as system app to get access to Settings.
+LOCAL_CERTIFICATE := platform
+else
+$(error "This test app will fail to run unless it is built in non-user mode.")
+endif
+
 include $(BUILD_PACKAGE)

core/tests/hosttests/test-apps/DownloadManagerTestApp/AndroidManifest.xml

@@ -14,14 +14,16 @@
      limitations under the License.
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-       package="com.android.frameworks.downloadmanagertests">
+       package="com.android.frameworks.downloadmanagertests"
+       android:sharedUserId="android.uid.system">
 
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
+    <uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
 
     <application android:label="DownloadManagerTestApp">
             <uses-library android:name="android.test.runner" />

core/tests/hosttests/test-apps/DownloadManagerTestApp/src/com/android/frameworks/downloadmanagertests/DownloadManagerBaseTest.java

@@ -262,7 +262,7 @@ protected void setAirplaneModeOn(boolean enable) throws Exception {
         int state = enable ? 1 : 0;
 
         // Change the system setting
-        Settings.System.putInt(mContext.getContentResolver(), Settings.System.AIRPLANE_MODE_ON,
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON,
                 state);
 
         String timeoutMessage = "Timed out waiting for airplane mode to be " +
@@ -271,7 +271,7 @@ protected void setAirplaneModeOn(boolean enable) throws Exception {
         // wait for airplane mode to change state
         int currentWaitTime = 0;
         while (Settings.System.getInt(mContext.getContentResolver(),
-                Settings.System.AIRPLANE_MODE_ON, -1) != state) {
+                Settings.Global.AIRPLANE_MODE_ON, -1) != state) {
             timeoutWait(currentWaitTime, DEFAULT_WAIT_POLL_TIME, DEFAULT_MAX_WAIT_TIME,
                     timeoutMessage);
         }