ntp: remove default thumbnail for most visited (broken camera)

chrome/browser/ui/webui/ntp/thumbnail_source.cc

 // Copyright (c) 2011 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/ui/webui/ntp/thumbnail_source.h"
 
 #include "base/callback.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
@@ skipping 28 matching lines @@
   return "image/png";
 }
 
 MessageLoop* ThumbnailSource::MessageLoopForRequestPath(
     const std::string& path) const {
   // TopSites can be accessed from the IO thread.
   return top_sites_.get() ? NULL : DataSource::MessageLoopForRequestPath(path);
 }
 
 void ThumbnailSource::SendDefaultThumbnail(int request_id) {
-  // Use placeholder thumbnail.
-  if (!default_thumbnail_.get()) {
-    default_thumbnail_ =
-        ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
-            IDR_DEFAULT_THUMBNAIL);
-  }
   SendResponse(request_id, default_thumbnail_);
 }