Document.title getter should return text of title element and setter should stop when head el…

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 d53d3dbf246d877d9428c833585e3309679ed34b..13308419e2542afbfd73a8cd44d4ee78197e2068 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -719,7 +719,7 @@ public:
     void setTitle(const String&);
 
     Element* titleElement() const { return m_titleElement.get(); }
-    void setTitleElement(const String& title, Element* titleElement);
+    void setTitleElement(Element*);
     void removeTitle(Element* titleElement);
 
     const AtomicString& dir();
@@ -1259,7 +1259,6 @@ private:
 
     String m_title;
     String m_rawTitle;
-    bool m_titleSetExplicitly;
     RefPtrWillBeMember<Element> m_titleElement;
 
     OwnPtr<AXObjectCache> m_axObjectCache;