Add shoftcut (ctrl-f6) to toggle split view

athena/wm/split_view_controller.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ATHENA_WM_SPLIT_VIEW_CONTROLLER_H_
 #define ATHENA_WM_SPLIT_VIEW_CONTROLLER_H_
 
 #include "athena/wm/bezel_controller.h"
 #include "athena/wm/public/window_manager_observer.h"
 #include "athena/wm/window_overview_mode.h"
@@ skipping 15 matching lines @@
                             public WindowManagerObserver {
  public:
   SplitViewController(aura::Window* container,
                       WindowListProvider* window_list_provider,
                       WindowManager* window_manager);
 
   virtual ~SplitViewController();
 
   bool IsSplitViewModeActive() const;
 
+  void ToggleSplitView();
+
  private:
   enum State {
     // Split View mode is not active. |left_window_| and |right_window| are
     // NULL.
     INACTIVE,
     // Two windows |left_window_| and |right_window| are shown side by side and
     // there is a horizontal scroll in progress which is dragging the separator
     // between the two windows.
     SCROLLING,
     // Split View mode is active with |left_window_| and |right_window| showing
     // side by side each occupying half the screen. No scroll in progress.
     ACTIVE
   };
 
   void UpdateLayout(bool animate);
 
   void SetWindowTransform(aura::Window* left_window,
                           const gfx::Transform& transform,
                           bool animate);
 
   void OnAnimationCompleted(aura::Window* window);
 
   void UpdateSeparatorPositionFromScrollDelta(float delta);
 
   // Returns the current activity shown to the user. Persists through the
   // SCROLLING and ACTIVE states and gets updated if the current activity goes
   // 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;
 
   State state_;
 
   aura::Window* container_;
 
   // Window Manager which owns this SplitViewController.
   // Must be non NULL for the duration of the lifetime.
   WindowManager* window_manager_;
@@ skipping 16 matching lines @@
   int separator_position_;
 
   base::WeakPtrFactory<SplitViewController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SplitViewController);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_WM_SPLIT_VIEW_CONTROLLER_H_