defaultPlaybackRate  667 Source/core/html/HTMLMediaElement.cpp     setPlaybackRate(defaultPlaybackRate(), IGNORE_EXCEPTION);
defaultPlaybackRate  129 Source/core/html/HTMLMediaElement.h     double defaultPlaybackRate() const;
defaultPlaybackRate   68 Source/core/html/MediaController.h     double defaultPlaybackRate() const { return m_defaultPlaybackRate; }