Don't remove the gesture requirement in the autoplay experiment.

third_party/WebKit/Source/core/html/HTMLMediaElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 429 matching lines @@
     // Creates placeholder AudioTrack and/or VideoTrack objects when WebMemediaPlayer objects
     // advertise they have audio and/or video, but don't explicitly signal them via
     // addAudioTrack() and addVideoTrack().
     // FIXME: Remove this once all WebMediaPlayer implementations properly report their track info.
     void createPlaceholderTracksIfNecessary();
 
     // Sets the selected/enabled tracks if they aren't set before we initially
     // transition to HAVE_METADATA.
     void selectInitialTracksIfNecessary();
 
-    // Return true if and only if we require a user gesture before letting
-    // the media play.
-    bool isUserGestureRequiredForPlay() const;
+    // Return true if and only if a user gesture is required to unlock this
+    // media element for unrestricted autoplay / script control.  Don't confuse
+    // this with isGestureNeededForPlayback().  The latter is usually what one
+    // should use, if checking to see if an action is allowed.
+    bool isLockedPendingUserGesture() const;
 
     // If the user gesture is required, then this will remove it.  Note that
     // one should not generally call this method directly; use the one on
     // m_helper and give it a reason.
-    void removeUserGestureRequirement();
+    void unlockUserGesture();
+
+    // Return true if and only if a user gesture is requried for playback.  Even
+    // if isLockedPendingUserGesture() return true, this might return false if
+    // the requirement is currently overridden.  This does not check if a user
+    // gesture is currently being processed.
+    bool isGestureNeededForPlayback() const;
 
     void setNetworkState(NetworkState);
 
     void audioTracksTimerFired(Timer<HTMLMediaElement>*);
 
     // TODO(liberato): remove once autoplay gesture override experiment concludes.
     void triggerAutoplayViewportCheckForTesting();
 
     void scheduleResolvePlayPromises();
     void scheduleRejectPlayPromises(ExceptionCode);
@@ skipping 71 matching lines @@
     // Cached time value. Only valid when ready state is HAVE_METADATA or
     // higher, otherwise the current time is assumed to be zero.
     mutable double m_cachedTime;
 
     double m_fragmentEndTime;
 
     typedef unsigned PendingActionFlags;
     PendingActionFlags m_pendingActionFlags;
 
     // FIXME: HTMLMediaElement has way too many state bits.
-    bool m_userGestureRequiredForPlay : 1;
+    bool m_lockedPendingUserGesture : 1;
     bool m_playing : 1;
     bool m_shouldDelayLoadEvent : 1;
     bool m_haveFiredLoadedData : 1;
     bool m_autoplaying : 1;
     bool m_muted : 1;
     bool m_paused : 1;
     bool m_seeking : 1;
 
     // data has not been loaded since sending a "stalled" event
     bool m_sentStalledEvent : 1;
@@ skipping 94 matching lines @@
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } // namespace blink
 
 #endif // HTMLMediaElement_h