Remove unnecessary message_loop_proxy.h includes

google_apis/gaia/gaia_oauth_client.h

 // 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.
 
 #ifndef GOOGLE_APIS_GAIA_GAIA_OAUTH_CLIENT_H_
 #define GOOGLE_APIS_GAIA_GAIA_OAUTH_CLIENT_H_
 
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop_proxy.h"
 #include "base/values.h"
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 // A helper class to get and refresh OAuth2 refresh and access tokens.
 // Also exposes utility methods for fetching user email and token information.
 //
 // Supports one request at a time; for parallel requests, create multiple
@@ skipping 114 matching lines @@
 
  private:
   // The guts of the implementation live in this class.
   class Core;
   scoped_refptr<Core> core_;
   DISALLOW_COPY_AND_ASSIGN(GaiaOAuthClient);
 };
 }
 
 #endif  // GOOGLE_APIS_GAIA_GAIA_OAUTH_CLIENT_H_