Cleanup: IWYU for base/gtest_prod_util.h.

chrome/browser/extensions/api/identity/identity_api.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 CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
+#include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/api/identity/extension_token_key.h"
 #include "chrome/browser/extensions/api/identity/gaia_web_auth_flow.h"
 #include "chrome/browser/extensions/api/identity/identity_mint_queue.h"
 #include "chrome/browser/extensions/api/identity/identity_signin_flow.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "components/signin/core/browser/profile_identity_provider.h"
@@ skipping 324 matching lines @@
   // Helper to initialize final URL prefix.
   void InitFinalRedirectURLPrefix(const std::string& extension_id);
 
   scoped_ptr<WebAuthFlow> auth_flow_;
   GURL final_url_prefix_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_