Split Media.Controls.Show in .Video and .Audio.

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 81bda861d7fa13958c63371153ec38a5bda8ce70..022f9a30cb889deaf863f90b9e93a8d60d6ddf5f 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -47,6 +47,7 @@ class AudioSourceProviderClient;
 class AudioTrackList;
 class ContentType;
 class CueTimeline;
+class EnumerationHistogram;
 class Event;
 class ExceptionState;
 class HTMLSourceElement;
@@ -476,6 +477,8 @@ private:
     void rejectPlayPromises();
     void rejectPlayPromises(ExceptionCode, const String&);
 
+    EnumerationHistogram& showControlsHistogram() const;
+
     UnthrottledTimer<HTMLMediaElement> m_loadTimer;
     UnthrottledTimer<HTMLMediaElement> m_progressEventTimer;
     UnthrottledTimer<HTMLMediaElement> m_playbackProgressTimer;