[SVG2] Add getters and setters to SVG*List interfaces.

Source/core/svg/SVGStringListTearOff.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 28 matching lines @@
 class SVGStringListTearOff : public NewSVGPropertyTearOff<SVGStringList>, public ScriptWrappable {
 public:
     static PassRefPtr<SVGStringListTearOff> create(PassRefPtr<SVGStringList> target, SVGElement* contextElement, PropertyIsAnimValType propertyIsAnimVal, const QualifiedName& attributeName = nullQName())
     {
         return adoptRef(new SVGStringListTearOff(target, contextElement, propertyIsAnimVal, attributeName));
     }
 
     // SVGStringList DOM interface:
 
     // WebIDL requires "unsigned long" type instead of size_t.
-    unsigned long numberOfItems()
+    unsigned long length()
     {
-        return target()->numberOfItems();
+        return target()->length();
     }
 
     void clear(ExceptionState& exceptionState)
     {
         if (isImmutable()) {
             exceptionState.throwDOMException(NoModificationAllowedError, "The object is read-only.");
             return;
         }
 
         target()->clear();
@@ skipping 37 matching lines @@
             exceptionState.throwDOMException(NoModificationAllowedError, "The object is read-only.");
             return String();
         }
 
         target()->replaceItem(item, index, exceptionState);
         commitChange();
 
         return item;
     }
 
+    bool anonymousIndexedSetter(unsigned index, const String& item, ExceptionState& exceptionState)
+    {
+        replaceItem(item, index, exceptionState);
+        return true;
+    }
+
     String removeItem(unsigned long index, ExceptionState& exceptionState)
     {
         if (isImmutable()) {
             exceptionState.throwDOMException(NoModificationAllowedError, "The object is read-only.");
             return String();
         }
 
         String removedItem = target()->removeItem(index, exceptionState);
         commitChange();
 
@@ skipping 13 matching lines @@
         return item;
     }
 
 protected:
     SVGStringListTearOff(PassRefPtr<SVGStringList>, SVGElement*, PropertyIsAnimValType, const QualifiedName&);
 };
 
 } // namespace WebCore
 
 #endif // SVGStringListTearOff_h_