Allow the secure keyguard to engage behind Dreams.

TYPE_DREAM windows are now considered for relevant window
flags alongside application windows.

Bug: 6961616
Change-Id: Idee3303276a8b69c7f07de1d6acdce64c6e1b863

Author: dsandler

core/java/android/service/dreams/Dream.java

@@ -346,6 +346,11 @@ public void onDestroy() {
         lp.type = WindowManager.LayoutParams.TYPE_DREAM;
         lp.token = windowToken;
         lp.windowAnimations = com.android.internal.R.style.Animation_Dream;
+        lp.flags |= ( WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
+                    | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
+                    | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON 
+                    );
+        mWindow.setAttributes(lp);
 
         //WindowManagerImpl.getDefault().addView(mWindow.getDecorView(), lp);
 

policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

@@ -2854,8 +2854,8 @@ public void animatingWindowLw(WindowState win,
             if ((attrs.flags & FLAG_FORCE_NOT_FULLSCREEN) != 0) {
                 mForceStatusBar = true;
             }
-            if (attrs.type >= FIRST_APPLICATION_WINDOW
-                    && attrs.type <= LAST_APPLICATION_WINDOW
+            if (((attrs.type >= FIRST_APPLICATION_WINDOW && attrs.type <= LAST_APPLICATION_WINDOW)
+                        || attrs.type == TYPE_DREAM)
                     && attrs.x == 0 && attrs.y == 0
                     && attrs.width == WindowManager.LayoutParams.MATCH_PARENT
                     && attrs.height == WindowManager.LayoutParams.MATCH_PARENT) {