Release Media Router Action icon when dialog closed.

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

 // 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.
 
 #include "chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.h"
 
 #include <string>
 #include <vector>
 
 #include "chrome/browser/media/router/presentation_service_delegate_impl.h"
@@ skipping 225 matching lines @@
   dialog_observer_.reset(new DialogWebContentsObserver(
       media_router_dialog, this));
 
   if (action_)
     action_->OnPopupShown();
 }
 
 void MediaRouterDialogControllerImpl::Reset() {
   MediaRouterDialogController::Reset();
   dialog_observer_.reset();
+
+  if (action_)
+    action_->OnPopupHidden();
 }
 
 void MediaRouterDialogControllerImpl::OnDialogNavigated(
     const content::LoadCommittedDetails& details) {
   DCHECK(thread_checker_.CalledOnValidThread());
   WebContents* media_router_dialog = GetMediaRouterDialog();
   CHECK(media_router_dialog);
   ui::PageTransition transition_type = details.entry->GetTransitionType();
   content::NavigationType nav_type = details.type;
 
@@ skipping 35 matching lines @@
           ->GetWeakPtr();
   if (!presentation_request.get()) {
     media_router_ui->InitWithDefaultMediaSource(delegate);
   } else {
     media_router_ui->InitWithPresentationSessionRequest(
         initiator(), delegate, presentation_request.Pass());
   }
 }
 
 }  // namespace media_router