Add shoftcut (ctrl-f6) to toggle split view

athena/wm/split_view_controller.h

Index: athena/wm/split_view_controller.h
diff --git a/athena/wm/split_view_controller.h b/athena/wm/split_view_controller.h
index 337b75b2471a4ec73e036225764b6e3fb78e9af4..0a5975b18c183ca980a884b5bbe73404b580c915 100644
--- a/athena/wm/split_view_controller.h
+++ b/athena/wm/split_view_controller.h
@@ -33,6 +33,8 @@ class SplitViewController : public BezelController::ScrollDelegate,
 
   bool IsSplitViewModeActive() const;
 
+  void ToggleSplitView();
+
  private:
   enum State {
     // Split View mode is not active. |left_window_| and |right_window| are
@@ -62,13 +64,13 @@ class SplitViewController : public BezelController::ScrollDelegate,
   // off screen when the user switches between activities.
   aura::Window* GetCurrentActivityWindow();
 
-  // BezelController::ScrollDelegate overrides.
+  // BezelController::ScrollDelegate:
   virtual void ScrollBegin(BezelController::Bezel bezel, float delta) OVERRIDE;
   virtual void ScrollEnd() OVERRIDE;
   virtual void ScrollUpdate(float delta) OVERRIDE;
   virtual bool CanScroll() OVERRIDE;
 
-  // WindowManagerObserver
+  // WindowManagerObserver:
   virtual void OnOverviewModeEnter() OVERRIDE;
   virtual void OnOverviewModeExit() OVERRIDE;