TRACE_EVENT_CATEGORY_GROUP_ENABLED  732 Source/core/dom/Node.cpp     TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("style.debug"), &styleTracingEnabled);
TRACE_EVENT_CATEGORY_GROUP_ENABLED 1127 Source/core/frame/FrameView.cpp     TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), &isTracing);
TRACE_EVENT_CATEGORY_GROUP_ENABLED   41 Source/core/rendering/LayoutRectRecorder.cpp     TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), &isTracing);