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

Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 701 matching lines @@
     void processReferrerPolicy(const String& policy);
 
     // Returns the owning element in the parent document.
     // Returns 0 if this is the top level document.
     HTMLFrameOwnerElement* ownerElement() const;
 
     String title() const { return m_title; }
     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();
     void setDir(const AtomicString&);
 
     String cookie(ExceptionState&) const;
     void setCookie(const String&, ExceptionState&);
 
     const AtomicString& referrer() const;
 
@@ skipping 519 matching lines @@
     bool m_haveExplicitlyDisabledDNSPrefetch;
     bool m_containsValidityStyleRules;
     bool m_updateFocusAppearanceRestoresSelection;
     bool m_containsPlugins;
 
     // http://www.whatwg.org/specs/web-apps/current-work/#ignore-destructive-writes-counter
     unsigned m_ignoreDestructiveWriteCount;
 
     String m_title;
     String m_rawTitle;
-    bool m_titleSetExplicitly;
     RefPtrWillBeMember<Element> m_titleElement;
 
     OwnPtr<AXObjectCache> m_axObjectCache;
     OwnPtrWillBeMember<DocumentMarkerController> m_markers;
 
     Timer<Document> m_updateFocusAppearanceTimer;
 
     RawPtrWillBeMember<Element> m_cssTarget;
 
     LoadEventProgress m_loadEventProgress;
@@ skipping 157 matching lines @@
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h