Add support for <basic-shape> to 'clip-path' on SVG elements

third_party/WebKit/Source/core/layout/svg/SVGResources.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 196 matching lines @@
     const AtomicString& tagName = element->localName();
     ASSERT(!tagName.isNull());
 
     TreeScope& treeScope = element->treeScope();
     SVGDocumentExtensions& extensions = element->document().accessSVGExtensions();
 
     const SVGComputedStyle& style = computedStyle.svgStyle();
 
     std::unique_ptr<SVGResources> resources;
     if (clipperFilterMaskerTags().contains(tagName)) {
-        if (style.hasClipper()) {
-            AtomicString id = style.clipperResource();
-            if (!ensureResources(resources).setClipper(getLayoutSVGResourceById<LayoutSVGResourceClipper>(treeScope, id)))
-                registerPendingResource(extensions, id, element);
+        if (ClipPathOperation* clipPathOperation = style.clipPath()) {
+            if (clipPathOperation->type() == ClipPathOperation::REFERENCE) {
+                const ReferenceClipPathOperation& clipPathReference = toReferenceClipPathOperation(*clipPathOperation);
+                AtomicString id = SVGURIReference::fragmentIdentifierFromIRIString(clipPathReference.url(), treeScope);
+                if (!ensureResources(resources).setClipper(getLayoutSVGResourceById<LayoutSVGResourceClipper>(treeScope, id)))
+                    registerPendingResource(extensions, id, element);
+            }
         }
 
         if (computedStyle.hasFilter() && !object->isSVGRoot())  {
             const FilterOperations& filterOperations = computedStyle.filter();
             if (filterOperations.size() == 1) {
                 const FilterOperation& filterOperation = *filterOperations.at(0);
                 if (filterOperation.type() == FilterOperation::REFERENCE) {
                     const auto& referenceFilterOperation = toReferenceFilterOperation(filterOperation);
                     AtomicString id = SVGURIReference::fragmentIdentifierFromIRIString(referenceFilterOperation.url(), treeScope);
                     if (!ensureResources(resources).setFilter(getLayoutSVGResourceById<LayoutSVGResourceFilter>(treeScope, id)))
@@ skipping 432 matching lines @@
         if (LayoutSVGResourcePaintServer* stroke = m_fillStrokeData->stroke)
             fprintf(stderr, " |-> Stroke     : %p (node=%p)\n", stroke, stroke->element());
     }
 
     if (m_linkedResource)
         fprintf(stderr, " |-> xlink:href : %p (node=%p)\n", m_linkedResource, m_linkedResource->element());
 }
 #endif
 
 } // namespace blink