First fix to minimize copying of image data.

chrome/browser/dom_ui/downloads_ui.cc

 // Copyright (c) 2006-2009 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/downloads_ui.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/string_piece.h"
 #include "base/thread.h"
@@ skipping 121 matching lines @@
   DownloadsUIHTMLSource* html_source = new DownloadsUIHTMLSource();
 
   // Set up the chrome://downloads/ source.
   g_browser_process->io_thread()->message_loop()->PostTask(FROM_HERE,
       NewRunnableMethod(&chrome_url_data_manager,
           &ChromeURLDataManager::AddDataSource,
           html_source));
 }
 
 // static
-bool DownloadsUI::GetFaviconResourceBytes(std::vector<unsigned char>* bytes) {
+RefCountedMemory* DownloadsUI::GetFaviconResourceBytes() {
   return ResourceBundle::GetSharedInstance().
-      LoadImageResourceBytes(IDR_DOWNLOADS_FAVICON, bytes);
+      LoadImageResourceBytes(IDR_DOWNLOADS_FAVICON);
 }