Move MessageLoop to base namespace.

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 50 matching lines @@
     callback.Run(default_thumbnail_);
   }
 }
 
 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";
 }
 
-MessageLoop* ThumbnailSource::MessageLoopForRequestPath(
+base::MessageLoop* ThumbnailSource::MessageLoopForRequestPath(
     const std::string& path) const {
   // TopSites can be accessed from the IO thread.
   return thumbnail_service_.get() ?
       NULL : content::URLDataSource::MessageLoopForRequestPath(path);
 }
 
 bool ThumbnailSource::ShouldServiceRequest(
     const net::URLRequest* request) const {
   if (request->url().SchemeIs(chrome::kChromeSearchScheme)) {
     if (InstantService::IsInstantPath(request->url()) &&
         InstantIOContext::ShouldServiceRequest(request)) {
       // If this request will be serviced on the IO thread, then do the
       // translation from raw_path to path here, where we have the |request|
       // object in-hand, saving the result for later use.
 
       // Strip leading slash from path.
       std::string raw_path = request->url().path().substr(1);
       if (!MessageLoopForRequestPath(raw_path)) {
         id_to_url_map_[raw_path] =
             InstantService::MaybeTranslateInstantPathOnIO(request, raw_path);
       }
       return true;
     }
     return false;
   }
   return URLDataSource::ShouldServiceRequest(request);
 }