Cleanup remaining class/struct fwd declarations

google_apis/gaia/oauth2_access_token_fetcher_impl.h

 // Copyright 2014 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_OAUTH2_ACCESS_TOKEN_FETCHER_IMPL_H_
 #define GOOGLE_APIS_GAIA_OAUTH2_ACCESS_TOKEN_FETCHER_IMPL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "google_apis/gaia/oauth2_access_token_consumer.h"
 #include "google_apis/gaia/oauth2_access_token_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "url/gurl.h"
 
 class OAuth2AccessTokenFetcherImplTest;
 
 namespace base {
 class Time;
 }
 
 namespace net {
 class URLFetcher;
 class URLRequestContextGetter;
-class URLRequestStatus;
 }
 
 // Abstracts the details to get OAuth2 access token token from
 // OAuth2 refresh token.
 // See "Using the Refresh Token" section in:
 // http://code.google.com/apis/accounts/docs/OAuth2WebServer.html
 //
 // This class should be used on a single thread, but it can be whichever thread
 // that you like.
 // Also, do not reuse the same instance. Once Start() is called, the instance
@@ skipping 71 matching lines @@
   friend class OAuth2AccessTokenFetcherImplTest;
   FRIEND_TEST_ALL_PREFIXES(OAuth2AccessTokenFetcherImplTest,
                            ParseGetAccessTokenResponse);
   FRIEND_TEST_ALL_PREFIXES(OAuth2AccessTokenFetcherImplTest,
                            MakeGetAccessTokenBody);
 
   DISALLOW_COPY_AND_ASSIGN(OAuth2AccessTokenFetcherImpl);
 };
 
 #endif  // GOOGLE_APIS_GAIA_OAUTH2_ACCESS_TOKEN_FETCHER_IMPL_H_