chrome: Cleanup class/struct forward declarations

chrome/browser/media/router/media_router.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_MEDIA_ROUTER_MEDIA_ROUTER_H_
 #define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/callback_list.h"
 #include "base/memory/scoped_vector.h"
 #include "base/time/time.h"
 #include "chrome/browser/media/router/issue.h"
 #include "chrome/browser/media/router/media_route.h"
 #include "chrome/browser/media/router/media_sink.h"
 #include "chrome/browser/media/router/media_source.h"
 #include "chrome/browser/media/router/route_message_observer.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/presentation_service_delegate.h"
 
-class Profile;
-
 namespace content {
 class WebContents;
 }
 
 namespace media_router {
 
 class IssuesObserver;
 class MediaRoutesObserver;
 class MediaSinksObserver;
 class PresentationConnectionStateObserver;
@@ skipping 202 matching lines @@
 
   // Unregisters a previously registered RouteMessagesObserver. |observer| will
   // stop receiving further updates.
   virtual void UnregisterRouteMessageObserver(
       RouteMessageObserver* observer) = 0;
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_H_