Ensure that the controls attribute is correctly reflected in JS.

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 5b2756e307c7194f13580ffbab0eaf47f58488ee..3496f73843de11cea8a2418c76232a16557ed0d2 100644
--- a/Source/core/html/HTMLMediaElement.h
+++ b/Source/core/html/HTMLMediaElement.h
@@ -157,9 +157,9 @@ public:
     void closeMediaSource();
     void durationChanged(double duration, bool requestSeek);
 
-    // controls

[philipj_slow, 2014/06/27 14:26:19]

Leave this as it was, since some effort appears to have been made to keep it in
sync with IDL/spec.

-    bool controls() const;
-    void setControls(bool);
+    // Takes scripting and full screen mode into account.
+    bool shouldShowControls() const;
+
     double volume() const;
     void setVolume(double, ExceptionState&);
     bool muted() const;