Handle not having main window in createThumbnailAppAnimator.

A recent code change associated the SurfaceControl with the main
window owner id. However, it is possible for the an AppWindowToken to
not have a main window. This case is handled later in the method.

This CL restores the original behavior of using the calling uid in
the cases no main window is present.

Change-Id: Iad69fe383c2208c1db523c8b4601a8f927f9318a
Fixes: 62096254
Test: go/wm-smoke

1 files changed, 2 insertions, 1 deletions

diff --git a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
index 4a1a7052a8b0..424b25ec4d9d 100644
--- a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
+++ b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
@@ -694,7 +694,8 @@ class WindowSurfacePlacer {
             SurfaceControl surfaceControl = new SurfaceControl(mService.mFxSession,
                     "thumbnail anim", dirty.width(), dirty.height(),
                     PixelFormat.TRANSLUCENT, SurfaceControl.HIDDEN,
-                    appToken.windowType, window.mOwnerUid);
+                    appToken.windowType,
+                    window != null ? window.mOwnerUid : Binder.getCallingUid());
             surfaceControl.setLayerStack(display.getLayerStack());
             if (SHOW_TRANSACTIONS) {
                 Slog.i(TAG, "  THUMBNAIL " + surfaceControl + ": CREATE");