Implement media cast buttons

Source/core/html/HTMLMediaElement.h

Index: Source/core/html/HTMLMediaElement.h
diff --git a/Source/core/html/HTMLMediaElement.h b/Source/core/html/HTMLMediaElement.h
index 7c0acbcd7817fab0558cacc6cfd06f04c3344f78..216ef373b0b021dda50ca3f2930185c32766aef0 100644
--- a/Source/core/html/HTMLMediaElement.h
+++ b/Source/core/html/HTMLMediaElement.h
@@ -110,6 +110,9 @@ public:
 
     bool isActive() const { return m_active; }
 
+    bool hasRemoteRoutes() const { return m_remoteRoutesAvailable; }
+    bool isPlayingRemotely() const { return m_playingRemotely; }
+
     // error state
     PassRefPtrWillBeRawPtr<MediaError> error() const;
 
@@ -150,6 +153,8 @@ public:
     void setLoop(bool b);
     void play();
     void pause();
+    void requestRemotePlayback();
+    void requestRemotePlaybackControl();
 
     // statistics
     unsigned webkitAudioDecodedByteCount() const;
@@ -262,6 +267,10 @@ public:
     bool closedCaptionsVisible() const;
     void setClosedCaptionsVisible(bool);
 
+    void remoteRouteAvailabilityChanged(bool);
+    void connectedToRemoteDevice();
+    void disconnectedFromRemoteDevice();
+
     MediaControls* mediaControls() const;
 
     void sourceWasRemoved(HTMLSourceElement*);
@@ -578,6 +587,8 @@ private:
     bool m_tracksAreReady : 1;
     bool m_haveVisibleTextTrack : 1;
     bool m_processingPreferenceChange : 1;
+    bool m_remoteRoutesAvailable : 1;
+    bool m_playingRemotely : 1;
 #if ENABLE(OILPAN)
     bool m_isFinalizing : 1;
     bool m_closeMediaSourceWhenFinalizing : 1;