Improve large tab strip by leveraging touch icons when present

chrome/browser/ui/touch/tabs/touch_tab_strip.h

 // Copyright (c) 2011 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_TOUCH_TABS_TOUCH_TAB_STRIP_H_
 #define CHROME_BROWSER_UI_TOUCH_TABS_TOUCH_TAB_STRIP_H_
 #pragma once
 
 #include "chrome/browser/ui/views/tabs/base_tab_strip.h"
 
@@ skipping 48 matching lines @@
   // views::View overrides:
   virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
   virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
 
   // Retrieves the Tab at the specified index. Remember, the specified index
   // is in terms of tab_data, *not* the model.
   TouchTab* GetTabAtTabDataIndex(int tab_data_index) const;
 
+  // Retrieves the Tab at the specified *model* index.
+  TouchTab* GetTouchTabAtModelIndex(int model_index) const;
+
  private:
   void Init();
 
   // Overridden from views::View.
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void PaintChildren(gfx::Canvas* canvas) OVERRIDE;
   virtual ui::TouchStatus OnTouchEvent(const views::TouchEvent& event) OVERRIDE;
   virtual void ViewHierarchyChanged(bool is_add,
                                     View* parent,
                                     View* child) OVERRIDE;
@@ skipping 50 matching lines @@
   TouchTab* initial_tab_;
 
   // The minimum value that |scroll_offset_| can have.  Based on the total
   // width of all the content to be scrolled, less the viewport size.
   int min_scroll_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchTabStrip);
 };
 
 #endif  // CHROME_BROWSER_UI_TOUCH_TABS_TOUCH_TAB_STRIP_H_