[PresentationSevice] Use PresentationConnection to send messages from

content/renderer/presentation/presentation_dispatcher.h

 // Copyright 2015 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 CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_
 #define CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 149 matching lines @@
   // blink::mojom::PresentationServiceClient
   void OnScreenAvailabilityNotSupported(const GURL& url) override;
   void OnScreenAvailabilityUpdated(
       const GURL& url,
       blink::mojom::ScreenAvailability availability) override;
   void OnConnectionStateChanged(const PresentationInfo& presentation_info,
                                 PresentationConnectionState state) override;
   void OnConnectionClosed(const PresentationInfo& presentation_info,
                           PresentationConnectionCloseReason reason,
                           const std::string& message) override;
-  void OnConnectionMessagesReceived(
-      const PresentationInfo& presentation_info,
-      std::vector<PresentationConnectionMessage> messages) override;
   void OnDefaultPresentationStarted(
       const PresentationInfo& presentation_info) override;
 
   void OnConnectionCreated(
       std::unique_ptr<blink::WebPresentationConnectionCallbacks> callback,
       const base::Optional<PresentationInfo>& presentation_info,
       const base::Optional<PresentationError>& error);
   void OnReceiverConnectionAvailable(
       const PresentationInfo& presentation_info,
       blink::mojom::PresentationConnectionPtr /*connection*/,
@@ skipping 98 matching lines @@
   // otherwise returns UNKNOWN.
   blink::mojom::ScreenAvailability GetScreenAvailability(
       const std::vector<GURL>& urls) const;
 
   DISALLOW_COPY_AND_ASSIGN(PresentationDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_