Bug 200465

[WebKit] ASSERTION FAILED: m_observers.isEmpty() if WKPageSetPageStateClient is used After Bug 199848, An assertion always fails when terminating WebView if WKPageSetPageStateClient is used. ASSERTION FAILED: m_observers.isEmpty() ..\..\Source\WebKit\UIProcess/PageLoadState.cpp(45) : ~PageLoadState > WTF.dll!WTFCrash() Line 305 C++ > WebKit2.dll!WTFCrashWithInfo(int, const char *, const char *, int) Line 568 C++ > WebKit2.dll!WebKit::PageLoadState::~PageLoadState() Line 45 C++ > WebKit2.dll!WebKit::WebPageProxy::~WebPageProxy() Line 517 C++ > WebKit2.dll!WebKit::WebPageProxy::~WebPageProxy() Line 494 C++ > WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref::<unnamed-tag>::operator()() Line 77 C++ > WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref() Line 96 C++ > WebKit2.dll!WTF::derefIfNotNull<WebKit::WebPageProxy>(WebKit::WebPageProxy * ptr) Line 45 C++ > WebKit2.dll!WTF::RefPtr<WebKit::WebPageProxy,WTF::DumbPtrTraits<WebKit::WebPageProxy> >::~RefPtr() Line 69 C++ > WebKit2.dll!WebKit::WebView::~WebView() Line 257 C++ > WebKit2.dll!WebKit::WebView::~WebView() Line 253 C++ > WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref::<unnamed-tag>::operator()() Line 77 C++ > WebKit2.dll!WTF::ThreadSafeRefCounted<API::Object,WTF::DestructionThread::Any>::deref() Line 96 C++ > WebKit2.dll!WKRelease(const void * typeRef) Line 47 C++ > MiniBrowserLib.dll!WebKit::WKRetainPtr<const OpaqueWKView *>::~WKRetainPtr() Line 82 C++ > MiniBrowserLib.dll!WebKitBrowserWindow::~WebKitBrowserWindow() Line 34 C++ > MiniBrowserLib.dll!WebKitBrowserWindow::~WebKitBrowserWindow() Line 34 C++ > MiniBrowserLib.dll!WTF::RefCounted<BrowserWindow>::deref() Line 145 C++ > MiniBrowserLib.dll!WTF::derefIfNotNull<BrowserWindow>(BrowserWindow * ptr) Line 45 C++ > MiniBrowserLib.dll!WTF::RefPtr<BrowserWindow,WTF::DumbPtrTraits<BrowserWindow> >::~RefPtr() Line 69 C++ > MiniBrowserLib.dll!MainWindow::~MainWindow() Line 95 C++ > MiniBrowserLib.dll!WTF::RefCounted<MainWindow>::deref() Line 145 C++ > MiniBrowserLib.dll!WTF::derefIfNotNull<MainWindow>(MainWindow * ptr) Line 45 C++ > MiniBrowserLib.dll!WTF::RefPtr<MainWindow,WTF::DumbPtrTraits<MainWindow> >::~RefPtr() Line 69 C++ > MiniBrowserLib.dll!MainWindow::WndProc(HWND__ * hWnd, unsigned int message, unsigned __int64 wParam, __int64 lParam) Line 270 C++ > [External Code] > WebKit2.dll!WebCore::WindowMessageBroadcaster::SubclassedWndProc(HWND__ * hwnd, unsigned int message, unsigned __int64 wParam, __int64 lParam) Line 123 C++ > [External Code] > WebKit.dll!WebKitMessageLoop::run(HACCEL__ * hAccelTable) Line 94 C++ > MiniBrowserLib.dll!wWinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpstrCmdLine, int nCmdShow) Line 97 C++ > MiniBrowserLib.dll!dllLauncherEntryPoint(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpstrCmdLine, int nCmdShow) Line 115 C++ > MiniBrowser.exe!wWinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, wchar_t * lpstrCmdLine, int nCmdShow) Line 232 C++ > [External Code]