Improve large tab strip by leveraging touch icons when present

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

 // 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.
 
 #include "chrome/browser/ui/touch/tabs/touch_tab_strip.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "chrome/browser/ui/touch/tabs/touch_tab.h"
@@ skipping 253 matching lines @@
     } else {
       scroll_offset_ = min_scroll_offset_;
     }
   }
 }
 
 TouchTab* TouchTabStrip::GetTabAtTabDataIndex(int tab_data_index) const {
   return static_cast<TouchTab*>(base_tab_at_tab_index(tab_data_index));
 }
 
+// Retrieves the Tab at the specified *model* index.
+TouchTab* TouchTabStrip::GetTouchTabAtModelIndex(int model_index) const {
+  return static_cast<TouchTab*>(GetBaseTabAtModelIndex(model_index));
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // TouchTabStrip, private:
 
 void TouchTabStrip::Init() {
   set_id(VIEW_ID_TAB_STRIP);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // TouchTabStrip, views::View overrides, private:
 
@@ skipping 69 matching lines @@
   last_tapped_view_ = view;
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
 void TouchTabStrip::ViewHierarchyChanged(bool is_add,
                                          View* parent,
                                          View* child) {
   if (!is_add && last_tapped_view_ == child)
     last_tapped_view_ = NULL;
 }