Resolve CSS url(...) non-<image> values against the correct base

third_party/WebKit/Source/core/css/CSSValue.cpp

 /*
  * Copyright (C) 2011 Andreas Kling (kling@webkit.org)
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 94 matching lines @@
   if (getClassType() == ImageClass)
     return toCSSImageValue(this)->hasFailedOrCanceledSubresources();
   if (getClassType() == CrossfadeClass)
     return toCSSCrossfadeValue(this)->hasFailedOrCanceledSubresources();
   if (getClassType() == ImageSetClass)
     return toCSSImageSetValue(this)->hasFailedOrCanceledSubresources();
 
   return false;
 }
 
+bool CSSValue::mayContainUrl() const {
+  if (isValueList())
+    return toCSSValueList(*this).mayContainUrl();
+  return isImageValue() || isURIValue();
+}
+
+void CSSValue::reResolveUrl(const Document& document) const {
+  // TODO(fs): Should handle all values that can contain URLs.
+  if (isImageValue()) {
+    toCSSImageValue(*this).reResolveURL(document);
+    return;
+  }
+  if (isURIValue()) {
+    toCSSURIValue(*this).reResolveUrl(document);
+    return;
+  }
+  if (isValueList()) {
+    toCSSValueList(*this).reResolveUrl(document);
+    return;
+  }
+}
+
 template <class ChildClassType>
 inline static bool compareCSSValues(const CSSValue& first,
                                     const CSSValue& second) {
   return static_cast<const ChildClassType&>(first).equals(
       static_cast<const ChildClassType&>(second));
 }
 
 bool CSSValue::equals(const CSSValue& other) const {
   if (m_classType == other.m_classType) {
     switch (getClassType()) {
@@ skipping 449 matching lines @@
       toCSSCustomPropertyDeclaration(this)->traceAfterDispatch(visitor);
       return;
     case PendingSubstitutionValueClass:
       toCSSPendingSubstitutionValue(this)->traceAfterDispatch(visitor);
       return;
   }
   ASSERT_NOT_REACHED();
 }
 
 }  // namespace blink