ESC accelerator and consistent overview mode for Athena homecard

athena/wm/window_manager_impl.h

Index: athena/wm/window_manager_impl.h
diff --git a/athena/wm/window_manager_impl.h b/athena/wm/window_manager_impl.h
index 32e98315460f5b6b7ac78bcfd471d286aadf86dd..02207d3be9d49be069c126d5f05ad6b7cec8f798 100644
--- a/athena/wm/window_manager_impl.h
+++ b/athena/wm/window_manager_impl.h
@@ -43,6 +43,7 @@ class ATHENA_EXPORT WindowManagerImpl : public WindowManager,
 
   // WindowManager:
   virtual void ToggleOverview() OVERRIDE;
+  virtual void ActivateOverview(bool activate) OVERRIDE;
   virtual bool IsOverviewModeActive() OVERRIDE;
 
  private:
@@ -50,6 +51,7 @@ class ATHENA_EXPORT WindowManagerImpl : public WindowManager,
   friend class AthenaContainerLayoutManager;
 
   enum Command {
+    CMD_EXIT_OVERVIEW,
     CMD_TOGGLE_OVERVIEW,
     CMD_TOGGLE_SPLIT_VIEW,
   };