Moved context modes into view, renamed to action modes

ContextualMode renamed to ActionMode. Adds a reference to the action
bar and reduces confusion around things named "Context".

Change-Id: Ia5098b1d0799a0ece0810c34e6696eda039fb005
diff --git a/core/java/android/view/ViewRoot.java b/core/java/android/view/ViewRoot.java
index 03cbb8a..877a302 100644
--- a/core/java/android/view/ViewRoot.java
+++ b/core/java/android/view/ViewRoot.java
@@ -2717,6 +2717,10 @@
         return false;
     }
 
+    public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) {
+        return null;
+    }
+
     public void createContextMenu(ContextMenu menu) {
     }