Notify apps when insets change.

Activities that handle their own configuration get layout when hidden
and the configuration changes but not when the content insets change
if they are hidden. They need to get a fresh layout for both
situations.

Fixes bug 11544694.

Change-Id: Iff3a9adb72ea7dfc3e5cd38e1b9cd7cf2006f8f5
diff --git a/services/java/com/android/server/wm/AppWindowToken.java b/services/java/com/android/server/wm/AppWindowToken.java
index b1d67de..e98014b 100644
--- a/services/java/com/android/server/wm/AppWindowToken.java
+++ b/services/java/com/android/server/wm/AppWindowToken.java
@@ -53,7 +53,7 @@
     int groupId = -1;
     boolean appFullscreen;
     int requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
-    int configChanges;
+    boolean layoutConfigChanges;
     boolean showWhenLocked;
 
     // The input dispatching timeout for this application token in nanoseconds.