Have Document::timing() / Document::contextFeatures() return a reference

Source/core/dom/Document.cpp

 /*
  * 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, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 2692 matching lines @@
 }
 
 void Document::setURL(const KURL& url)
 {
     const KURL& newURL = url.isEmpty() ? blankURL() : url;
     if (newURL == m_url)
         return;
 
     m_url = newURL;
     updateBaseURL();
-    contextFeatures()->urlDidChange(this);
+    contextFeatures().urlDidChange(this);
 }
 
 void Document::updateBaseURL()
 {
     KURL oldBaseURL = m_baseURL;
     // DOM 3 Core: When the Document supports the feature "HTML" [DOM Level 2 HTML], the base URI is computed using
     // first the value of the href attribute of the HTML BASE element if any, and the value of the documentURI attribute
     // from the Document interface otherwise (which we store, preparsed, in m_url).
     if (!m_baseElementURL.isEmpty())
         m_baseURL = m_baseElementURL;
@@ skipping 2396 matching lines @@
     --m_activeParserCount;
     if (!frame())
         return;
     // FIXME: This should always be enabled, but it seems to cause
     // http/tests/security/feed-urls-from-remote.html to timeout on Mac WK1
     // see http://webkit.org/b/110554 and http://webkit.org/b/110401
     loader()->checkLoadComplete();
     frame()->loader().checkLoadComplete();
 }
 
-void Document::setContextFeatures(PassRefPtr<ContextFeatures> features)
+void Document::setContextFeatures(ContextFeatures& features)
 {
-    m_contextFeatures = features;
+    m_contextFeatures = PassRefPtr<ContextFeatures>(features);
 }
 
 static RenderObject* nearestCommonHoverAncestor(RenderObject* obj1, RenderObject* obj2)
 {
     if (!obj1 || !obj2)
         return 0;
 
     for (RenderObject* currObj1 = obj1; currObj1; currObj1 = currObj1->hoverAncestor()) {
         for (RenderObject* currObj2 = obj2; currObj2; currObj2 = currObj2->hoverAncestor()) {
             if (currObj1 == currObj2)
@@ skipping 295 matching lines @@
 void Document::defaultEventHandler(Event* event)
 {
     if (frame() && frame()->remotePlatformLayer()) {
         frame()->chromeClient().forwardInputEvent(this, event);
         return;
     }
     Node::defaultEventHandler(event);
 }
 
 } // namespace WebCore