Improve large tab strip by leveraging touch icons when present

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

Index: chrome/browser/ui/touch/tabs/touch_tab.h
diff --git a/chrome/browser/ui/touch/tabs/touch_tab.h b/chrome/browser/ui/touch/tabs/touch_tab.h
index b4ff409ed756abae2066c2952e6425e6a214d2d6..ec458aa3df32247690dd2890ae9a81025ebe7475 100644
--- a/chrome/browser/ui/touch/tabs/touch_tab.h
+++ b/chrome/browser/ui/touch/tabs/touch_tab.h
@@ -25,6 +25,9 @@ class TouchTab : public BaseTab {
   // The menu button's class name.
   static const char kViewClassName[];
 
+  // The size of the favicon touch area.
+  static const int kTouchTargetIconSize = 32;
+
   explicit TouchTab(TabController* controller);
   virtual ~TouchTab();
 
@@ -34,6 +37,14 @@ class TouchTab : public BaseTab {
     background_offset_ = offset;
   }
 
+  // get and set touch icon
+  void set_touch_icon(const SkBitmap& bitmap) {
+    touch_icon_ = bitmap;
+  }
+  const SkBitmap& touch_icon() const {
+    return touch_icon_;
+  }
+
   // Returns the minimum possible size of a single unselected Tab.
   static gfx::Size GetMinimumUnselectedSize();
 
@@ -74,6 +85,9 @@ class TouchTab : public BaseTab {
   // The offset used to paint the inactive background image.
   gfx::Point background_offset_;
 
+  // The touch icon found
+  SkBitmap touch_icon_;
+
   // 'l' is for left
   // 'c' is for center
   // 'r' is for right