Treat touch icons just like non-touch icons on mobile

components/favicon/core/favicon_driver_observer.h

 // Copyright 2014 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 COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_OBSERVER_H_
 #define COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_OBSERVER_H_
 
 #include "base/macros.h"
 
 namespace gfx {
 class Image;
 }
 
 class GURL;
 
 namespace favicon {
 
 class FaviconDriver;
 
 // An observer implemented by classes which are interested in event from
 // FaviconDriver.
 class FaviconDriverObserver {
  public:
   // The type of the icon in the OnFaviconUpdated() notification.
   enum NotificationIconType {
     // Multi-resolution 16x16 (gfx::kFaviconSize) device independant pixel
     // favicon of type favicon_base::FAVICON. If the page does not provide a
     // 16x16 DIP icon, the icon is generated by resizing another icon.
     NON_TOUCH_16_DIP,
-    // Largest icon specified by the page which is of type
-    // favicon_base::FAVICON.
-    NON_TOUCH_LARGEST,
-    // Largest icon specified by the page which is of type
-    // favicon_base::TOUCH_ICON or of type favicon_base::TOUCH_PRECOMPOSED_ICON.
-    TOUCH_LARGEST
+    // Largest icon specified by the page, of any type (includes favicons and
+    // touch icons).
+    LARGEST
   };
 
   FaviconDriverObserver() {}
   virtual ~FaviconDriverObserver() {}
 
   // Called when either:
   // 1) Chrome determines the best icon for the page for
   //    |notification_icon_type|.
   //    Not called if the site does not provide a custom icon and the best icon
   //    for the page is the default one provided by Chrome.
@@ skipping 17 matching lines @@
                                 bool icon_url_changed,
                                 const gfx::Image& image) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FaviconDriverObserver);
 };
 
 }  // namespace favicon
 
 #endif  // COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_OBSERVER_H_