Refactor media out of WebContentsImpl to MediaWebContentsObserver.

chromecast/browser/cast_content_window.cc

 // 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.
 
 #include "chromecast/browser/cast_content_window.h"
 
 #include "base/threading/thread_restrictions.h"
 #include "chromecast/base/metrics/cast_metrics_helper.h"
 #include "chromecast/browser/cast_browser_process.h"
 #include "chromecast/media/base/video_plane_controller.h"
@@ skipping 104 matching lines @@
   content::WebContents* web_contents = content::WebContents::Create(
       create_params);
   content::WebContentsObserver::Observe(web_contents);
   return make_scoped_ptr(web_contents);
 }
 
 void CastContentWindow::DidFirstVisuallyNonEmptyPaint() {
   metrics::CastMetricsHelper::GetInstance()->LogTimeToFirstPaint();
 }
 
-void CastContentWindow::MediaPaused() {
+void CastContentWindow::MediaStoppedPlaying(const MediaPlayerId& id) {
   metrics::CastMetricsHelper::GetInstance()->LogMediaPause();
 }
 
-void CastContentWindow::MediaStartedPlaying() {
+void CastContentWindow::MediaStartedPlaying(const MediaPlayerId& id) {
   metrics::CastMetricsHelper::GetInstance()->LogMediaPlay();
 }
 
 void CastContentWindow::RenderViewCreated(
     content::RenderViewHost* render_view_host) {
   content::RenderWidgetHostView* view =
       render_view_host->GetWidget()->GetView();
   if (view)
     view->SetBackgroundColor(transparent_ ? SK_ColorTRANSPARENT
                                           : SK_ColorBLACK);
 }
 
 }  // namespace shell
 }  // namespace chromecast