First fix to minimize copying of image data.

chrome/browser/dom_ui/dom_ui_favicon_source.cc

 // Copyright (c) 2009 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/dom_ui/dom_ui_favicon_source.h"
 
 #include "app/resource_bundle.h"
 #include "chrome/browser/profile.h"
 #include "chrome/common/url_constants.h"
 #include "grit/app_resources.h"
@@ skipping 36 matching lines @@
   FaviconService* favicon_service =
       profile_->GetFaviconService(Profile::EXPLICIT_ACCESS);
   int request_id = cancelable_consumer_.GetClientData(favicon_service,
                                                       request_handle);
 
   if (know_favicon && data.get() && !data->data.empty()) {
     // Forward the data along to the networking system.
     SendResponse(request_id, data);
   } else {
     if (!default_favicon_.get()) {
-      default_favicon_ = new RefCountedBytes;
-      ResourceBundle::GetSharedInstance().LoadImageResourceBytes(
-          IDR_DEFAULT_FAVICON, &default_favicon_->data);
+      default_favicon_ =
+          ResourceBundle::GetSharedInstance().LoadImageResourceBytes(
+              IDR_DEFAULT_FAVICON);
     }
 
     SendResponse(request_id, default_favicon_);
   }
 }