Add srcObject attribute of type MediaStream to HTMLMediaElement.

third_party/WebKit/public/platform/WebMediaPlayer.h

Index: third_party/WebKit/public/platform/WebMediaPlayer.h
diff --git a/third_party/WebKit/public/platform/WebMediaPlayer.h b/third_party/WebKit/public/platform/WebMediaPlayer.h
index 9a5eb43c8da476e4056dc820a44ce3d983061faa..cdf331490e44646808d835c54f37ae42e7fe7441 100644
--- a/third_party/WebKit/public/platform/WebMediaPlayer.h
+++ b/third_party/WebKit/public/platform/WebMediaPlayer.h
@@ -44,6 +44,7 @@ namespace blink {
 
 class WebAudioSourceProvider;
 class WebContentDecryptionModule;
+class WebMediaElementSource;
 class WebSecurityOrigin;
 class WebString;
 class WebURL;
@@ -100,7 +101,7 @@ public:
 
     virtual ~WebMediaPlayer() { }
 
-    virtual void load(LoadType, const WebURL&, CORSMode) = 0;
+    virtual void load(LoadType, const WebMediaElementSource&, CORSMode) = 0;
 
     // Playback controls.
     virtual void play() = 0;