Have SVGURIReference API deal with Document references, not pointers

Source/core/css/resolver/FilterOperationResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 387 matching lines @@
                 continue;
             CSSValue* argument = filterValue->itemWithoutBoundsCheck(0);
 
             if (!argument->isCSSSVGDocumentValue())
                 continue;
 
             CSSSVGDocumentValue* svgDocumentValue = static_cast<CSSSVGDocumentValue*>(argument);
             KURL url = state.document().completeURL(svgDocumentValue->url());
 
             RefPtr<ReferenceFilterOperation> operation = ReferenceFilterOperation::create(svgDocumentValue->url(), url.fragmentIdentifier(), operationType);
-            if (SVGURIReference::isExternalURIReference(svgDocumentValue->url(), &state.document())) {
+            if (SVGURIReference::isExternalURIReference(svgDocumentValue->url(), state.document())) {
                 if (!svgDocumentValue->loadRequested())
                     state.elementStyleResources().addPendingSVGDocument(operation.get(), svgDocumentValue);
                 else if (svgDocumentValue->cachedSVGDocument())
                     operation->setDocumentResourceReference(adoptPtr(new DocumentResourceReference(svgDocumentValue->cachedSVGDocument())));
             }
             operations.operations().append(operation);
             continue;
         }
 
         // Check that all parameters are primitive values, with the
@@ skipping 80 matching lines @@
             ASSERT_NOT_REACHED();
             break;
         }
     }
 
     outOperations = operations;
     return true;
 }
 
 } // namespace WebCore