Add srcObject attribute of type MediaStream to HTMLMediaElement.

third_party/WebKit/Source/core/html/HTMLMediaElement.h

Index: third_party/WebKit/Source/core/html/HTMLMediaElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.h b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
index 05c1fcd9f311778302f33b28076ea5108a3872b1..61901051efce0aa41c2677ce677f347ddaba14ec 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -38,6 +38,7 @@
 #include "platform/Supplementable.h"
 #include "platform/audio/AudioSourceProvider.h"
 #include "public/platform/WebAudioSourceProviderClient.h"
+#include "public/platform/WebMediaElementSource.h"
 #include "public/platform/WebMediaPlayerClient.h"
 #include "public/platform/WebMimeRegistry.h"
 
@@ -110,6 +111,7 @@ public:
     // network state
     void setSrc(const AtomicString&);
     const KURL& currentSrc() const { return m_currentSrc; }
+    void setSrcObject(const WebMediaElementSource&);
 
     enum NetworkState { NETWORK_EMPTY, NETWORK_IDLE, NETWORK_LOADING, NETWORK_NO_SOURCE };
     NetworkState getNetworkState() const;
@@ -355,11 +357,13 @@ private:
     void invokeResourceSelectionAlgorithm();
     void loadInternal();
     void selectMediaResource();
-    void loadResource(const KURL&, ContentType&);
+    void loadResource(ContentType&);

[philipj_slow, 2016/03/29 13:43:19]

Can loadResource still take the thing to load as an argument? If not, why?

Note that this code is being refactored in
https://codereview.chromium.org/1810513002/ so there will be conflicts for
someone.

[Guido Urdaneta, 2016/03/29 14:48:11]

The thing to load is now stored in the m_source member.
When it's an srcObject it has to be stored somewhere because there are
asynchronous tasks between setSrcObject() and loadResource().
 
I think rebasing on top of that CL will not be an issue.

     void startPlayerLoad();
     void setPlayerPreload();
     WebMediaPlayer::LoadType loadType() const;
     void scheduleNextSourceChild();
+    void loadSourceFromObject();
+    void loadSourceFromAttribute();
     void loadNextSourceChild();
     void clearMediaPlayer();
     void clearMediaPlayerAndAudioSourceProviderClientWithoutLocking();
@@ -483,6 +487,7 @@ private:
     ReadyState m_readyState;
     ReadyState m_readyStateMaximum;
     KURL m_currentSrc;
+    WebMediaElementSource m_source;
 
     PersistentWillBeMember<MediaError> m_error;
 
@@ -504,7 +509,7 @@ private:
     double m_defaultPlaybackStartPosition;
 
     // Loading state.
-    enum LoadState { WaitingForSource, LoadingFromSrcAttr, LoadingFromSourceElement };
+    enum LoadState { WaitingForSource, LoadingFromSrcObject, LoadingFromSrcAttr, LoadingFromSourceElement };
     LoadState m_loadState;
     RefPtrWillBeMember<HTMLSourceElement> m_currentSourceNode;
     RefPtrWillBeMember<Node> m_nextChildNodeToConsider;