Don't wait to notify client of spoof attempt if a modal dialog is created.

Source/core/loader/FrameLoader.cpp

Index: Source/core/loader/FrameLoader.cpp
diff --git a/Source/core/loader/FrameLoader.cpp b/Source/core/loader/FrameLoader.cpp
index a291a62c83023f79e55965421ee5dd2896fc0b28..95d01a027f1d3499f5d7a99d786524814666a1e6 100644
--- a/Source/core/loader/FrameLoader.cpp
+++ b/Source/core/loader/FrameLoader.cpp
@@ -939,6 +939,15 @@ void FrameLoader::didAccessInitialDocumentTimerFired(Timer<FrameLoader>*)
     m_client->didAccessInitialDocument();
 }
 
+void FrameLoader::notifyIfInitialDocumentAccessed()
+{
+    if (m_didAccessInitialDocumentTimer.isActive()
+        && m_stateMachine.isDisplayingInitialEmptyDocument()) {
+        m_didAccessInitialDocumentTimer.stop();
+        didAccessInitialDocumentTimerFired(0);
+    }
+}
+
 bool FrameLoader::isLoading() const
 {
     DocumentLoader* docLoader = activeDocumentLoader();