Cleanup: IWYU for base/gtest_prod_util.h.

chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.h

 // Copyright 2015 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_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_IMPL_H_
 #define CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_IMPL_H_
 
+#include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/media/router/media_router_dialog_controller.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
 FORWARD_DECLARE_TEST(MediaRouterActionUnitTest, IconPressedState);
 
 class MediaRouterAction;
 
 namespace media_router {
 
-namespace {
-class MediaRouterDialogDelegate;
-}
-
 // A desktop implementation of MediaRouterDialogController.
 // This class is not thread safe and must be called on the UI thread.
 class MediaRouterDialogControllerImpl :
     public content::WebContentsUserData<MediaRouterDialogControllerImpl>,
     public MediaRouterDialogController {
  public:
   ~MediaRouterDialogControllerImpl() override;
 
   static MediaRouterDialogControllerImpl* GetOrCreateForWebContents(
       content::WebContents* web_contents);
@@ skipping 34 matching lines @@
   bool media_router_dialog_pending_;
 
   base::WeakPtr<MediaRouterAction> action_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaRouterDialogControllerImpl);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_DIALOG_CONTROLLER_IMPL_H_