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 282856a1a9aa90f4c1351e6acedb07c2585ec119..5c774d18b2084e949dc302288bedb5e6f34f3a69 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;
@@ -484,6 +485,8 @@ private:
     void rejectPlayPromises();
     void rejectPlayPromises(ExceptionCode, const String&);
 
+    EnumerationHistogram& showControlsHistogram() const;
+
     UnthrottledTimer<HTMLMediaElement> m_loadTimer;
     UnthrottledTimer<HTMLMediaElement> m_progressEventTimer;
     UnthrottledTimer<HTMLMediaElement> m_playbackProgressTimer;