Improved tab overview animations with better animation and wiring to...

chrome/browser/views/tabs/tab_overview_container.h

 // Copyright (c) 2009 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 CHROME_BROWSER_VIEWS_TABS_TAB_OVERVIEW_CONTAINER_H_
 #define CHROME_BROWSER_VIEWS_TABS_TAB_OVERVIEW_CONTAINER_H_
 
 #include "views/view.h"
 
 class TabOverviewGrid;
 
 // TabOverviewContainer contains TabOverviewGrid. TabOverviewContainer provides
 // padding around the grid as well as maintaining a shape on the containing
 // widget.
 class TabOverviewContainer : public views::View {
  public:
   TabOverviewContainer();
   virtual ~TabOverviewContainer();
 
   // Sets the max size. This ends up being passed down to the grid after
   // adjusting for our borders.
   void SetMaxSize(const gfx::Size& max_size);
 
-  // Updates the shape on the containing widget.
-  void UpdateWidgetShape(int width, int height);
+  // Updates the shape on the containing widget. |horizontal_center| gives the
+  // center of the window the parent window we're contained in is centered
+  // over.
+  void UpdateWidgetShape(int horizontal_center, int width, int height);
 
   // View overrides.
   virtual gfx::Size GetPreferredSize();
   virtual void Layout();
   virtual void Paint(gfx::Canvas* canvas);
   virtual void DidChangeBounds(const gfx::Rect& previous,
                                const gfx::Rect& current);
 
  private:
   TabOverviewGrid* GetTabOverviewGrid();
 
   DISALLOW_COPY_AND_ASSIGN(TabOverviewContainer);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TABS_TAB_OVERVIEW_CONTAINER_H_