[wip] unprefix filter

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 641 matching lines @@
     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(&layoutObject) << "\n";
         }
     }
-    if (!svgStyle.filterResource().isEmpty()) {
-        if (LayoutSVGResourceFilter* filter = getLayoutSVGResourceById<LayoutSVGResourceFilter>(object.document(), svgStyle.filterResource())) {
-            writeIndent(ts, indent);
-            ts << " ";
-            writeNameAndQuotedValue(ts, "filter", svgStyle.filterResource());
-            ts << " ";
-            writeStandardPrefix(ts, *filter, 0);
-            ts << " " << filter->resourceBoundingBox(&layoutObject) << "\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(&layoutObject) << "\n";
+                }
+            }
         }
     }
 }
 
 } // namespace blink