mash: Preliminary support for shelf auto-hide

ash/shelf/shelf_widget.h

 // Copyright (c) 2012 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 ASH_SHELF_SHELF_WIDGET_H_
 #define ASH_SHELF_SHELF_WIDGET_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
@@ skipping 77 matching lines @@
   // no dimmer active, the function will return -1.
   int GetDimmingAlphaForTest();
 
   // A function to test the bounds of the dimming bar. Returns gfx::Rect() if
   // the dimmer is inactive.
   gfx::Rect GetDimmerBoundsForTest();
 
   // Disable dimming animations for running tests.
   void DisableDimmingAnimationsForTest();
 
-  // ShelfLayoutManagerObserver overrides:
-  void WillDeleteShelf() override;
-
  private:
   class DelegateView;
 
+  // views::Widget:
+  void OnMouseEvent(ui::MouseEvent* event) override;
+  void OnGestureEvent(ui::GestureEvent* event) override;
+
+  // ShelfLayoutManagerObserver:
+  void WillDeleteShelf() override;
+
   ShelfLayoutManager* shelf_layout_manager_;
   std::unique_ptr<Shelf> shelf_;
   StatusAreaWidget* status_area_widget_;
 
   // delegate_view_ is attached to window_container_ and is cleaned up
   // during CloseChildWindows of the associated RootWindowController.
   DelegateView* delegate_view_;
   BackgroundAnimator background_animator_;
   bool activating_as_fallback_;
   aura::Window* window_container_;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_WIDGET_H_