Tentatively turn on WebMediaPlayerMS by default.

content/renderer/media/media_stream_impl.h

 // Copyright (c) 2012 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 CONTENT_RENDERER_MEDIA_MEDIA_STREAM_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_IMPL_H_
 
 #include <map>
 #include <string>
 
@@ skipping 33 matching lines @@
       public base::SupportsWeakPtr<MediaStreamImpl>,
       NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   MediaStreamImpl(
       content::RenderView* render_view,
       MediaStreamDispatcher* media_stream_dispatcher,
       VideoCaptureImplManager* vc_manager,
       MediaStreamDependencyFactory* dependency_factory);
   virtual ~MediaStreamImpl();
 
+  // Return true when the |url| is media stream.
+  // This static function has the same functionalilty as IsMediaStream
+  // except that it doesn't require an instance of this class.
+  // This can save some overhead time when the |url| is not media stream.
+  static bool CheckMediaStream(const GURL& url);
+
   // WebKit::WebUserMediaClient implementation
   virtual void requestUserMedia(
       const WebKit::WebUserMediaRequest& user_media_request,
       const WebKit::WebVector<WebKit::WebMediaStreamSource>& audio_sources,
       const WebKit::WebVector<WebKit::WebMediaStreamSource>& video_sources)
       OVERRIDE;
   virtual void cancelUserMediaRequest(
       const WebKit::WebUserMediaRequest& user_media_request) OVERRIDE;
 
   // webkit_media::MediaStreamClient implementation.
@@ skipping 91 matching lines @@
 
   scoped_refptr<VideoCaptureImplManager> vc_manager_;
 
   MediaRequestMap user_media_requests_;
   LocalNativeStreamMap local_media_streams_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamImpl);
 };
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_IMPL_H_