Add srcObject attribute of type MediaStream to HTMLMediaElement.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index e1515b3f98cc2a64ebc6f80180c4267cec8ee70d..4c38b86713020a9908350f60383608b4621a8c8c 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -103,6 +103,7 @@
 #include "content/renderer/media/render_media_log.h"
 #include "content/renderer/media/renderer_webmediaplayer_delegate.h"
 #include "content/renderer/media/user_media_client_impl.h"
+#include "content/renderer/media/web_media_element_source_utils.h"
 #include "content/renderer/media/webmediaplayer_ms.h"
 #include "content/renderer/mojo/service_registry_js_wrapper.h"
 #include "content/renderer/mojo_bindings_controller.h"
@@ -150,6 +151,7 @@
 #include "net/http/http_util.h"
 #include "third_party/WebKit/public/platform/URLConversion.h"
 #include "third_party/WebKit/public/platform/WebData.h"
+#include "third_party/WebKit/public/platform/WebMediaElementSource.h"
 #include "third_party/WebKit/public/platform/WebMediaPlayer.h"
 #include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/platform/WebStorageQuotaCallbacks.h"
@@ -2408,7 +2410,7 @@ blink::WebPlugin* RenderFrameImpl::createPlugin(
 }
 
 blink::WebMediaPlayer* RenderFrameImpl::createMediaPlayer(
-    const blink::WebURL& url,
+    const blink::WebMediaElementSource& source,
     WebMediaPlayerClient* client,
     WebMediaPlayerEncryptedMediaClient* encrypted_client,
     WebContentDecryptionModule* initial_cdm,
@@ -2420,13 +2422,17 @@ blink::WebMediaPlayer* RenderFrameImpl::createMediaPlayer(
     contains_media_player_ = true;
   }
 #endif  // defined(VIDEO_HOLE)
-
-  blink::WebMediaStream web_stream(
-      blink::WebMediaStreamRegistry::lookupMediaStreamDescriptor(url));
+  blink::WebMediaStream web_stream =
+      GetWebMediaStreamFromWebMediaElementSource(source);
   if (!web_stream.isNull())
     return CreateWebMediaPlayerForMediaStream(client, sink_id,
                                               frame_->getSecurityOrigin());
 
+  // If |source| was not a MediaStream, it must be a URL.
+  // TODO(guidou): Fix this when support for other srcObject types is added.
+  DCHECK(source.isURL());
+  blink::WebURL url = source.getAsURL();
+
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
 
   scoped_refptr<media::SwitchableAudioRendererSink> audio_renderer_sink =