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

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

 /*
  * Copyright (C) 2004, 2005, 2007, 2009 Apple Inc. All rights reserved.
  *           (C) 2005 Rob Buis <buis@kde.org>
  *           (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 631 matching lines @@
     if (!svgStyle.maskerResource().isEmpty()) {
         if (LayoutSVGResourceMasker* masker = getLayoutSVGResourceById<LayoutSVGResourceMasker>(object.document(), svgStyle.maskerResource())) {
             writeIndent(ts, indent);
             ts << " ";
             writeNameAndQuotedValue(ts, "masker", svgStyle.maskerResource());
             ts << " ";
             writeStandardPrefix(ts, *masker, 0);
             ts << " " << masker->resourceBoundingBox(&object) << "\n";
         }
     }
-    if (!svgStyle.clipperResource().isEmpty()) {
-        if (LayoutSVGResourceClipper* clipper = getLayoutSVGResourceById<LayoutSVGResourceClipper>(object.document(), svgStyle.clipperResource())) {
-            writeIndent(ts, indent);
-            ts << " ";
-            writeNameAndQuotedValue(ts, "clipPath", svgStyle.clipperResource());
-            ts << " ";
-            writeStandardPrefix(ts, *clipper, 0);
-            ts << " " << clipper->resourceBoundingBox(object.objectBoundingBox()) << "\n";
+    if (ClipPathOperation* clipPathOperation = svgStyle.clipPath()) {
+        if (clipPathOperation->type() == ClipPathOperation::REFERENCE) {
+            const ReferenceClipPathOperation& clipPathReference = toReferenceClipPathOperation(*clipPathOperation);
+            AtomicString id = SVGURIReference::fragmentIdentifierFromIRIString(clipPathReference.url(), object.document());
+            if (LayoutSVGResourceClipper* clipper = getLayoutSVGResourceById<LayoutSVGResourceClipper>(object.document(), id)) {
+                writeIndent(ts, indent);
+                ts << " ";
+                writeNameAndQuotedValue(ts, "clipPath", id);
+                ts << " ";
+                writeStandardPrefix(ts, *clipper, 0);
+                ts << " " << clipper->resourceBoundingBox(object.objectBoundingBox()) << "\n";
+            }
         }
     }
     if (style.hasFilter()) {
         const FilterOperations& filterOperations = style.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(), object.document());
                 if (LayoutSVGResourceFilter* filter = getLayoutSVGResourceById<LayoutSVGResourceFilter>(object.document(), id)) {
                     writeIndent(ts, indent);
                     ts << " ";
                     writeNameAndQuotedValue(ts, "filter", id);
                     ts << " ";
                     writeStandardPrefix(ts, *filter, 0);
                     ts << " " << filter->resourceBoundingBox(&object) << "\n";
                 }
             }
         }
     }
 }
 
 } // namespace blink