Use HTMLMediaElement::togglePlayState() where appropriate

Source/core/html/MediaController.h

Index: Source/core/html/MediaController.h
diff --git a/Source/core/html/MediaController.h b/Source/core/html/MediaController.h
index b18802a1f53b565f9afc10e751136b29d96703c9..484b37fc8f9fcf4576dbd32301d0a3ac6c782d8a 100644
--- a/Source/core/html/MediaController.h
+++ b/Source/core/html/MediaController.h
@@ -61,9 +61,9 @@ public:
     virtual double currentTime() const OVERRIDE;
     virtual void setCurrentTime(double, ExceptionState&) OVERRIDE;
 
-    virtual bool paused() const OVERRIDE { return m_paused; }
-    virtual void play() OVERRIDE;
-    virtual void pause() OVERRIDE;
+    bool paused() const { return m_paused; }
+    void play();
+    void pause();
     void unpause();
 
     double defaultPlaybackRate() const { return m_defaultPlaybackRate; }
@@ -86,8 +86,6 @@ public:
 
     virtual bool hasAudio() const OVERRIDE;
 
-    virtual bool canPlay() const OVERRIDE;
-
     bool isRestrained() const;
     bool isBlocked() const;