Action bar refactoring, round 1

Decouple PhoneWindow and ActionBarView to allow for using Toolbar in
some circumstances later.

Change-Id: I907743e06c3a1203e21cfd84860a1884c66f3527
diff --git a/core/java/com/android/internal/app/WindowDecorActionBar.java b/core/java/com/android/internal/app/WindowDecorActionBar.java
index 79a8f44..a238ae3 100644
--- a/core/java/com/android/internal/app/WindowDecorActionBar.java
+++ b/core/java/com/android/internal/app/WindowDecorActionBar.java
@@ -183,7 +183,7 @@
 
     private void init(View decor) {
         mOverlayLayout = (ActionBarOverlayLayout) decor.findViewById(
-                com.android.internal.R.id.action_bar_overlay_layout);
+                com.android.internal.R.id.decor_content_parent);
         if (mOverlayLayout != null) {
             mOverlayLayout.setActionBarVisibilityCallback(this);
         }