Add render frame observer for CopylessPaste

third_party/WebKit/Source/modules/document_metadata/CopylessPasteExtractorTest.cpp

 // Copyright 2017 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 "modules/document_metadata/CopylessPasteExtractor.h"
 
 #include <memory>
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/testing/DummyPageHolder.h"
@@ skipping 15 matching lines @@
             "}\n"
             "\n") {}
 
  protected:
   void SetUp() override;
 
   void TearDown() override { ThreadState::current()->collectAllGarbage(); }
 
   Document& document() const { return m_dummyPageHolder->document(); }
 
-  String extract() { return CopylessPasteExtractor::extract(document()); }
+  String extract() { return CopylessPasteExtractor::metadata(document()); }
 
   void setHtmlInnerHTML(const String&);
 
   String m_content;
 
  private:
   std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
 };
 
 void CopylessPasteExtractorTest::SetUp() {
@@ skipping 53 matching lines @@
       "</body>");
 
   String extracted = extract();
   String expected = "[" + m_content + "," + m_content + "," + m_content + "]";
   EXPECT_EQ(expected, extracted);
 }
 
 }  // namespace
 
 }  // namespace blink