navigateBackForward  229 Source/core/loader/EmptyClients.h     virtual bool navigateBackForward(int offset) const OVERRIDE { return false; }
navigateBackForward  131 Source/core/loader/FrameLoaderClient.h         virtual bool navigateBackForward(int offset) const = 0;
navigateBackForward  193 Source/core/loader/NavigationScheduler.cpp         frame->page()->mainFrame()->loader().client()->navigateBackForward(m_historySteps);
navigateBackForward 3459 Source/core/page/EventHandler.cpp     bool handledEvent = page->mainFrame()->loader().client()->navigateBackForward(event->shiftKey() ? 1 : -1);
navigateBackForward  105 Source/web/FrameLoaderClientImpl.h     virtual bool navigateBackForward(int offset) const OVERRIDE;