Merge "Correct dissapearing SurfaceView during exit animations."

services/core/java/com/android/server/wm/WindowState.java

@@ -1532,6 +1532,13 @@ class WindowState extends WindowContainer<WindowState> implements WindowManagerP
             return changed;
         }
 
+        // Next up we will notify the client that it's visibility has changed.
+        // We need to prevent it from destroying child surfaces until
+        // the animation has finished.
+        if (!visible && isVisibleNow()) {
+            mWinAnimator.detachChildren();
+        }
+
         if (visible != isVisibleNow()) {
             if (!runningAppAnimation) {
                 final AccessibilityController accessibilityController =