Add srcObject attribute of type MediaStream to HTMLMediaElement.

content/renderer/media/webmediaplayer_ms_compositor.cc

Index: content/renderer/media/webmediaplayer_ms_compositor.cc
diff --git a/content/renderer/media/webmediaplayer_ms_compositor.cc b/content/renderer/media/webmediaplayer_ms_compositor.cc
index bbc25863583510a7e6800274f3a7d6e87f43c046..55819d3aeeac370ac1b2857e4caf69f15999e42c 100644
--- a/content/renderer/media/webmediaplayer_ms_compositor.cc
+++ b/content/renderer/media/webmediaplayer_ms_compositor.cc
@@ -5,6 +5,7 @@
 #include "content/renderer/media/webmediaplayer_ms_compositor.h"
 
 #include <stdint.h>
+#include <string>
 
 #include "base/command_line.h"
 #include "base/hash.h"
@@ -22,8 +23,6 @@
 #include "third_party/WebKit/public/platform/WebMediaStream.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
-#include "third_party/WebKit/public/platform/WebURL.h"
-#include "third_party/WebKit/public/web/WebMediaStreamRegistry.h"
 #include "third_party/libyuv/include/libyuv/convert.h"
 #include "third_party/libyuv/include/libyuv/video_common.h"
 
@@ -116,7 +115,7 @@ scoped_refptr<media::VideoFrame> CopyFrame(
 
 WebMediaPlayerMSCompositor::WebMediaPlayerMSCompositor(
     const scoped_refptr<base::SingleThreadTaskRunner>& compositor_task_runner,
-    const blink::WebURL& url,
+    const blink::WebMediaStream& web_stream,
     const base::WeakPtr<WebMediaPlayerMS>& player)
     : compositor_task_runner_(compositor_task_runner),
       player_(player),
@@ -129,8 +128,6 @@ WebMediaPlayerMSCompositor::WebMediaPlayerMSCompositor(
       weak_ptr_factory_(this) {
   main_message_loop_ = base::MessageLoop::current();
 
-  const blink::WebMediaStream web_stream(
-      blink::WebMediaStreamRegistry::lookupMediaStreamDescriptor(url));
   blink::WebVector<blink::WebMediaStreamTrack> video_tracks;
   if (!web_stream.isNull())
     web_stream.videoTracks(video_tracks);
@@ -148,7 +145,9 @@ WebMediaPlayerMSCompositor::WebMediaPlayerMSCompositor(
   }
 
   // Just for logging purpose.
-  const uint32_t hash_value = base::Hash(url.string().utf8());
+  std::string stream_id =
+      web_stream.isNull() ? std::string() : web_stream.id().utf8();
+  const uint32_t hash_value = base::Hash(stream_id);
   serial_ = (hash_value << 1) | (remote_video ? 1 : 0);
 }