Cleanup: IWYU for base/gtest_prod_util.h.

components/signin/core/browser/refresh_token_annotation_request.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 COMPONENTS_SIGNIN_CORE_BROWSER_REFRESH_TOKEN_ANNOTATION_REQUEST_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_REFRESH_TOKEN_ANNOTATION_REQUEST_H_
 
 #include "base/callback.h"
+#include "base/gtest_prod_util.h"
 #include "base/threading/non_thread_safe.h"
 #include "google_apis/gaia/oauth2_api_call_flow.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 
 class PrefService;
 class SigninClient;
 
 // RefreshTokenAnnotationRequest sends request to IssueToken endpoint with
 // device_id to backfill device info for refresh tokens issued pre-M38. It is
 // important to keep server QPS low therefore this request is sent on average
@@ skipping 58 matching lines @@
   std::string device_id_;
   std::string client_id_;
   base::Closure request_callback_;
 
   scoped_ptr<OAuth2TokenService::Request> access_token_request_;
 
   DISALLOW_COPY_AND_ASSIGN(RefreshTokenAnnotationRequest);
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_REFRESH_TOKEN_ANNOTATION_REQUEST_H_