Use an SVGElementProxy in ReferenceClipPathOperation

third_party/WebKit/Source/core/style/ClipPathOperation.cpp

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/style/ClipPathOperation.h"
+
+namespace blink {
+
+void ReferenceClipPathOperation::addClient(SVGResourceClient* client) {
+  m_elementProxy->addClient(client);
+}
+
+void ReferenceClipPathOperation::removeClient(SVGResourceClient* client) {
+  m_elementProxy->removeClient(client);
+}
+
+SVGElement* ReferenceClipPathOperation::findElement(
+    TreeScope& treeScope) const {
+  return m_elementProxy->findElement(treeScope);
+}
+
+bool ReferenceClipPathOperation::operator==(const ClipPathOperation& o) const {
+  if (!isSameType(o))
+    return false;
+  const ReferenceClipPathOperation& other = toReferenceClipPathOperation(o);
+  return m_elementProxy == other.m_elementProxy && m_url == other.m_url;
+}
+
+}  // namespace blink