Connect CopylessPasteExtractor to CopylessPasteServer

third_party/WebKit/Source/modules/document_metadata/CopylessPasteServer.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/CopylessPasteServer.h"
 
 #include "core/frame/LocalFrame.h"
 #include "modules/document_metadata/CopylessPasteExtractor.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
@@ skipping 10 matching lines @@
   // associated with frame lifetime.
   mojo::MakeStrongBinding(WTF::MakeUnique<CopylessPasteServer>(*frame),
                           std::move(request));
 }
 
 void CopylessPasteServer::GetEntities(const GetEntitiesCallback& callback) {
   if (!frame_ || !frame_->GetDocument()) {
     callback.Run(nullptr);
     return;
   }
-  // TODO(wychen): connect with CopylessPasteExtractor::extract() like:
-  // callback.Run(CopylessPasteExtractor::extract(*m_frame->document()));
-  callback.Run(nullptr);
+  callback.Run(CopylessPasteExtractor::extract(*frame_->GetDocument()));
 }
 
 }  // namespace blink