Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/ui/webui/ntp/thumbnail_source.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 "chrome/browser/ui/webui/ntp/thumbnail_source.h"
 
 #include "base/callback.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 41 matching lines @@
     }
   } else if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
     path = InstantService::MaybeTranslateInstantPathOnUI(profile_, raw_path);
   }
 
   scoped_refptr<base::RefCountedMemory> data;
   if (thumbnail_service_->GetPageThumbnail(GURL(path), &data)) {
     // We have the thumbnail.
     callback.Run(data.get());
   } else {
-    callback.Run(default_thumbnail_);
+    callback.Run(default_thumbnail_.get());
   }
 }
 
 std::string ThumbnailSource::GetMimeType(const std::string&) const {
   // We need to explicitly return a mime type, otherwise if the user tries to
   // drag the image they get no extension.
   return "image/png";
 }
 
 base::MessageLoop* ThumbnailSource::MessageLoopForRequestPath(
@@ skipping 17 matching lines @@
       if (!MessageLoopForRequestPath(raw_path)) {
         id_to_url_map_[raw_path] =
             InstantService::MaybeTranslateInstantPathOnIO(request, raw_path);
       }
       return true;
     }
     return false;
   }
   return URLDataSource::ShouldServiceRequest(request);
 }