Adds clipping to the tabs when stacked. This is necessary so we don't

chrome/browser/ui/views/tabs/tab_strip.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 CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 159 matching lines @@
   virtual bool IsTabCloseable(const BaseTab* tab) const OVERRIDE;
   virtual void MaybeStartDrag(
       BaseTab* tab,
       const views::MouseEvent& event,
       const TabStripSelectionModel& original_selection) OVERRIDE;
   virtual void ContinueDrag(const views::MouseEvent& event) OVERRIDE;
   virtual bool EndDrag(bool canceled) OVERRIDE;
   virtual BaseTab* GetTabAt(BaseTab* tab,
                             const gfx::Point& tab_in_tab_coordinates) OVERRIDE;
   virtual void ClickActiveTab(const BaseTab* tab) const OVERRIDE;
+  virtual bool ShouldPaintTab(const BaseTab* tab, gfx::Rect* clip) OVERRIDE;
 
   // MouseWatcherListener overrides:
   virtual void MouseMovedOutOfHost() OVERRIDE;
 
   // views::View overrides:
   virtual void Layout() OVERRIDE;
   virtual void PaintChildren(gfx::Canvas* canvas) OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   // NOTE: the drag and drop methods are invoked from FrameView. This is done
@@ skipping 307 matching lines @@
   // Size we last layed out at.
   gfx::Size last_layout_size_;
 
   // Only used while in touch mode.
   scoped_ptr<TouchTabStripLayout> touch_layout_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_