removePageOverlay  567 Source/web/WebDevToolsAgentImpl.cpp     m_webViewImpl->removePageOverlay(this);
removePageOverlay  282 Source/web/WebViewImpl.h     virtual void removePageOverlay(WebPageOverlay*) OVERRIDE;
removePageOverlay  483 public/web/WebView.h     virtual void removePageOverlay(WebPageOverlay*) = 0;