Change return type of FaviconTabHelper::GetFavicon() to gfx::Image.

content/public/browser/favicon_status.cc

 // 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.
 
 #include "content/public/browser/favicon_status.h"
 
 #include "content/public/browser/content_browser_client.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace content {
 
 FaviconStatus::FaviconStatus() : valid(false) {
   image = gfx::Image(*GetContentClient()->browser()->GetDefaultFavicon());
 }
 
-SkBitmap FaviconStatus::AsBitmap() const {
-  return image.IsEmpty() ? SkBitmap() : *image.ToSkBitmap();
-}
-
 }  // namespace content