Cleanup: IWYU for base/gtest_prod_util.h.

components/signin/core/browser/signin_manager_base.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.
 //
 // The signin manager encapsulates some functionality tracking
 // which user is signed in.
 //
 // **NOTE** on semantics of SigninManager:
 //
 // Once a signin is successful, the username becomes "established" and will not
 // be cleared until a SignOut operation is performed (persists across
 // restarts). Until that happens, the signin manager can still be used to
 // refresh credentials, but changing the username is not permitted.
 //
 // On Chrome OS, because of the existence of other components that handle login
 // and signin at a higher level, all that is needed from a SigninManager is
 // caching / handling of the "authenticated username" field, and TokenService
 // initialization, so that components that depend on these two things
 // (i.e on desktop) can continue using it / don't need to change. For this
 // reason, SigninManagerBase is all that exists on Chrome OS. For desktop,
 // see signin/signin_manager.h.
 
 #ifndef COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_MANAGER_BASE_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_MANAGER_BASE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
-#include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/prefs/pref_member.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/signin/core/browser/account_info.h"
 #include "components/signin/core/browser/signin_internals_util.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 
@@ skipping 131 matching lines @@
   // The list of SigninDiagnosticObservers.
   base::ObserverList<signin_internals_util::SigninDiagnosticsObserver, true>
       signin_diagnostics_observers_;
 
   base::WeakPtrFactory<SigninManagerBase> weak_pointer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninManagerBase);
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_MANAGER_BASE_H_