Layout SurfaceView in parent frame.

We always want the SurfaceView to be layed out
relative to the parent frame, fixes multiple issues
in freeform mode.

Bug: 26689889
Change-Id: Ib4728a515dc01c6884363b68a29f2e4ce5d5babc

core/java/android/view/SurfaceView.java

@@ -499,7 +499,8 @@ public class SurfaceView extends View {
                     mLayout.privateFlags |=
                             WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW;
                 }
-                mLayout.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_NO_MOVE_ANIMATION;
+                mLayout.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_NO_MOVE_ANIMATION
+                    | WindowManager.LayoutParams.PRIVATE_FLAG_LAYOUT_CHILD_WINDOW_IN_PARENT_FRAME;
 
                 if (mWindow == null) {
                     Display display = getDisplay();