Amend "Fix various flashes when..." CL

Missing cosmetic changes from last patch set due to
a rebase error on my part.

Test: Cosmetic
Change-Id: I3a8a68e8cecd1947cd9e54d5fcfe8bb4a792265b
diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 32cd7d8..5e19a45 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -368,6 +368,10 @@
                 mEnteringAnimation = true;
                 mService.mActivityManagerAppTransitionNotifier.onAppTransitionFinishedLocked(token);
             }
+            // If we are hidden but there is no delay needed we immediately
+            // apply the Surface transaction so that the ActivityManager
+            // can have some guarantee on the Surface state
+            // following setting the visibility.
             if (hidden && !delayed) {
                 SurfaceControl.openTransaction();
                 for (int i = mChildren.size() - 1; i >= 0; i--) {