Cleanup remaining class/struct fwd declarations

google_apis/gaia/oauth2_api_call_flow.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_OAUTH2_API_CALL_FLOW_H_
 #define GOOGLE_APIS_GAIA_OAUTH2_API_CALL_FLOW_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "url/gurl.h"
 
-class GoogleServiceAuthError;
-class OAuth2MintTokenFlowTest;
-
 namespace net {
 class URLFetcher;
 class URLRequestContextGetter;
 }
 
 // Base class for all classes that implement a flow to call OAuth2 enabled APIs,
 // given an access token to the service.  This class abstracts the basic steps
 // and exposes template methods for sub-classes to implement for API specific
 // details.
 class OAuth2ApiCallFlow : public net::URLFetcherDelegate {
@@ skipping 49 matching lines @@
   void BeginApiCall();
   void EndApiCall(const net::URLFetcher* source);
 
   State state_;
   std::unique_ptr<net::URLFetcher> url_fetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(OAuth2ApiCallFlow);
 };
 
 #endif  // GOOGLE_APIS_GAIA_OAUTH2_API_CALL_FLOW_H_