Delay dispatching DOMContentLoaded event to next event loop.

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index e83c97aa18cec21599a2312bfab6a87810ad673f..0a8c1a842f9711950c31f12c9482c509d3fc6beb 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -976,6 +976,8 @@ public:
     void incrementActiveParserCount() { ++m_activeParserCount; }
     void decrementActiveParserCount();
 
+    bool hasFiredDOMContentLoadedEvent() const { return m_hasFiredDOMContentLoadedEvent; }
+
     void setContextFeatures(ContextFeatures&);
     ContextFeatures& contextFeatures() const { return *m_contextFeatures; }
 
@@ -1121,6 +1123,7 @@ private:
     void updateFocusAppearanceTimerFired(Timer<Document>*);
     void updateBaseURL();
 
+    void dispatchDOMContentLoadedTimerFired(Timer<Document>*);
     void executeScriptsWaitingForResourcesTimerFired(Timer<Document>*);
 
     void loadEventDelayTimerFired(Timer<Document>*);
@@ -1202,6 +1205,8 @@ private:
     CompatibilityMode m_compatibilityMode;
     bool m_compatibilityModeLocked; // This is cheaper than making setCompatibilityMode virtual.
 
+    bool m_hasFiredDOMContentLoadedEvent;
+    Timer<Document> m_dispatchDOMContentLoadedTimer;
     Timer<Document> m_executeScriptsWaitingForResourcesTimer;
 
     bool m_hasAutofocused;