dispatchBeforeUnloadEvent  534 Source/core/dom/Document.h     bool dispatchBeforeUnloadEvent(Chrome&, bool&);
dispatchBeforeUnloadEvent 1222 Source/core/loader/FrameLoader.cpp             if (!targetFrames[i]->document()->dispatchBeforeUnloadEvent(page->chrome(), didAllowNavigation))
dispatchBeforeUnloadEvent  116 Source/web/WebFrameImpl.h     virtual bool dispatchBeforeUnloadEvent() OVERRIDE;
dispatchBeforeUnloadEvent  245 public/web/WebFrame.h     virtual bool dispatchBeforeUnloadEvent() = 0;