NONE               52 Source/core/events/Event.h         NONE                = 0,
NONE               44 Source/core/html/HTMLTrackElement.h     enum ReadyState { NONE = 0, LOADING = 1, LOADED = 2, TRACK_ERROR = 3 };
NONE              454 Source/core/rendering/style/RenderStyleConstants.h     NONE,
NONE               59 Source/platform/graphics/filters/FilterOperation.h         NONE