ESC accelerator and consistent overview mode for Athena homecard

athena/home/home_card_impl.h

Index: athena/home/home_card_impl.h
diff --git a/athena/home/home_card_impl.h b/athena/home/home_card_impl.h
index 12350952f18fc693c73a6d1864b6062ee48a809f..4a38b112aaebcdeac02af805251921a548d615ff 100644
--- a/athena/home/home_card_impl.h
+++ b/athena/home/home_card_impl.h
@@ -61,6 +61,7 @@ class ATHENA_EXPORT HomeCardImpl
     COMMAND_SHOW_HOME_CARD,
   };
   void InstallAccelerators();
+  void SetStateAndOverview(HomeCard::State state);
 
   // Overridden from HomeCard:
   virtual void SetState(HomeCard::State state) OVERRIDE;
@@ -100,6 +101,8 @@ class ATHENA_EXPORT HomeCardImpl
   // original_state_ is the state which the home card should go back to after
   // the virtual keyboard is hidden.
   HomeCard::State original_state_;
+  // state to set when overview mode enters or exits
+  HomeCard::State overview_state_;
 
   views::Widget* home_card_widget_;
   HomeCardView* home_card_view_;