setMediaPlaybackRequiresUserGesture  669 Source/web/WebSettingsImpl.cpp     m_settings->setMediaPlaybackRequiresUserGesture(required);
setMediaPlaybackRequiresUserGesture  124 Source/web/WebSettingsImpl.h     virtual void setMediaPlaybackRequiresUserGesture(bool) OVERRIDE;
setMediaPlaybackRequiresUserGesture  134 public/web/WebSettings.h     virtual void setMediaPlaybackRequiresUserGesture(bool) = 0;