Get rid of ensureStyleResolver().

sky/engine/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 208 matching lines @@
 
     bool isHTMLDocument() const { return m_documentClasses & HTMLDocumentClass; }
 
     struct TransitionElementData {
         String scope;
         String selector;
         String markup;
     };
     void getTransitionElementData(Vector<TransitionElementData>&);
 
-    StyleResolver* styleResolver() const;
-    StyleResolver& ensureStyleResolver() const;
+    StyleResolver& styleResolver() const;
 
     bool isScriptExecutionReady() const { return haveImportsLoaded(); }
 
     StyleEngine* styleEngine() { return m_styleEngine.get(); }
 
     // Called when one or more stylesheets in the document may have been added, removed, or changed.
     void styleResolverChanged();
 
     void evaluateMediaQueryList();
 
@@ skipping 544 matching lines @@
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLiveDocumentInstances();
 #endif
 
 #endif  // SKY_ENGINE_CORE_DOM_DOCUMENT_H_