Implement overscroll support for the virtual keyboard.

ash/shelf/shelf_layout_manager.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_LAYOUT_MANAGER_H_
 #define ASH_SHELF_SHELF_LAYOUT_MANAGER_H_
 
 #include <vector>
 
 #include "ash/ash_export.h"
@@ skipping 303 matching lines @@
   // Returns the AutoHideState. This value is determined from the shelf and
   // tray.
   ShelfAutoHideState CalculateAutoHideState(
       ShelfVisibilityState visibility_state) const;
 
   // Returns true if |window| is a descendant of the shelf.
   bool IsShelfWindow(aura::Window* window);
 
   int GetWorkAreaSize(const State& state, int size) const;
 
-  // Return the bounds available in the parent, taking into account the bounds
-  // of the keyboard if necessary.
-  gfx::Rect GetAvailableBounds() const;
-
   // Overridden from keyboard::KeyboardControllerObserver:
   virtual void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) OVERRIDE;
 
   // Overridden from DockedWindowLayoutManagerObserver:
   virtual void OnDockBoundsChanging(
       const gfx::Rect& dock_bounds,
       DockedWindowLayoutManagerObserver::Reason reason) OVERRIDE;
 
   // The RootWindow is cached so that we don't invoke Shell::GetInstance() from
   // our destructor. We avoid that as at the time we're deleted Shell is being
@@ skipping 69 matching lines @@
 
   // The show hide animation duration override or 0 for default.
   int duration_override_in_ms_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_LAYOUT_MANAGER_H_