[Blink,RemotePlayback] Use PresentationController for availability

third_party/WebKit/public/platform/modules/remoteplayback/WebRemotePlaybackClient.h

Index: third_party/WebKit/public/platform/modules/remoteplayback/WebRemotePlaybackClient.h
diff --git a/third_party/WebKit/public/platform/modules/remoteplayback/WebRemotePlaybackClient.h b/third_party/WebKit/public/platform/modules/remoteplayback/WebRemotePlaybackClient.h
index f7cdfa34e192e2b80b49747341ff18ff79b0f5e3..120181bbe0d49604a842cd87e4a9a66727d0375b 100644
--- a/third_party/WebKit/public/platform/modules/remoteplayback/WebRemotePlaybackClient.h
+++ b/third_party/WebKit/public/platform/modules/remoteplayback/WebRemotePlaybackClient.h
@@ -9,6 +9,7 @@ namespace blink {
 
 enum class WebRemotePlaybackAvailability;
 enum class WebRemotePlaybackState;
+class WebURL;
 
 // The interface between the HTMLMediaElement and its
 // HTMLMediaElementRemotePlayback supplement.
@@ -27,6 +28,9 @@ class WebRemotePlaybackClient {
 
   // Returns if the remote playback available for this media element.
   virtual bool RemotePlaybackAvailable() const = 0;
+
+  // Notifies the client that the source of the HTMLMediaElement has changed.
+  virtual void SourceChanged(const WebURL&) = 0;

[mark a. foltz, 2017/05/31 21:16:41]

What if the media element has multiple <source>s?

 };
 
 }  // namespace blink