Load the default favicon as a native image, rather than as a Skia image.

content/public/browser/content_browser_client.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 282 matching lines @@
 
   // Returns the locale used by the application.
   // This is called on the UI and IO threads.
   virtual std::string GetApplicationLocale();
 
   // Returns the languages used in the Accept-Languages HTTP header.
   // (Not called GetAcceptLanguages so it doesn't clash with win32).
   virtual std::string GetAcceptLangs(BrowserContext* context);
 
   // Returns the default favicon.  The callee doesn't own the given bitmap.
-  virtual gfx::ImageSkia* GetDefaultFavicon();
+  virtual const gfx::ImageSkia* GetDefaultFavicon();
 
   // Allow the embedder to control if an AppCache can be used for the given url.
   // This is called on the IO thread.
   virtual bool AllowAppCache(const GURL& manifest_url,
                              const GURL& first_party,
                              ResourceContext* context);
 
   // Allow the embedder to control if the given cookie can be read.
   // This is called on the IO thread.
   virtual bool AllowGetCookie(const GURL& url,
@@ skipping 326 matching lines @@
   // Allows an embedder to provide its own ExternalVideoSurfaceContainer
   // implementation.  Return NULL to disable external surface video.
   virtual ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(WebContents* web_contents);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_