Add mojo service for CopylessPaste in Blink

third_party/WebKit/Source/modules/document_metadata/CopylessPasteServer.h

+// 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.
+
+#ifndef CopylessPasteServer_h
+#define CopylessPasteServer_h
+
+#include "modules/ModulesExport.h"
+#include "platform/heap/Persistent.h"
+#include "public/platform/modules/document_metadata/copyless_paste.mojom-blink.h"
+
+namespace blink {
+
+class LocalFrame;
+
+// Mojo interface to return extracted metadata for AppIndexing.
+class MODULES_EXPORT CopylessPasteServer final
+    : public mojom::document_metadata::blink::CopylessPaste {
+ public:
+  explicit CopylessPasteServer(LocalFrame&);
+
+  static void bindMojoRequest(
+      LocalFrame*,
+      mojom::document_metadata::blink::CopylessPasteRequest);
+
+  void GetEntities(const GetEntitiesCallback&) override;
+
+ private:
+  WeakPersistent<LocalFrame> m_frame;
+};
+
+}  // namespace blink
+
+#endif  // CopylessPasteServer_h