Remove unused PresentationServiceImpl message code

third_party/WebKit/public/platform/modules/presentation/presentation.mojom

 // 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.
 
 // TODO(crbug.com/647290): Rename "Session" to "Connection"
 
 module blink.mojom;
 
 import "url/mojo/url.mojom";
 
@@ skipping 97 matching lines @@
   // Called in StartSession's callback function for offscreen presentation only.
   // It passes in controlling frame's PresentationConnection and
   // PresentationConnectionRequest to PresentationService.
   SetPresentationConnection(
       PresentationSessionInfo sessionInfo,
       PresentationConnection controller_connection_ptr,
       PresentationConnection& receiver_connection_request);
 
   //////////////////////////////////////////////////////////////////////////////
 
-  // Called when send() is called by the frame. The true in the
-  // result callback notifies that the service is ready for next message.
-  // The false in the result callback notifies the renderer to stop sending
-  // the send requests and invalidate all pending requests. This occurs
-  // for eg., when frame is deleted or navigated away.
-  SendConnectionMessage(PresentationSessionInfo sessionInfo,
-                     ConnectionMessage message_request) => (bool success);
-
   // Called when close() is called by the frame.
   CloseConnection(url.mojom.Url presentation_url, string presentation_id);
 
   // Called when terminate() is called by the frame.
   Terminate(url.mojom.Url presentation_url, string presentation_id);
 
   // Starts listening for messages for session with |sessionInfo|.
   // Messages will be received in
   // PresentationServiceClient::OnConnectionMessagesReceived.
   // This is called after a presentation session is created.
@@ skipping 36 matching lines @@
   OnConnectionMessagesReceived(PresentationSessionInfo sessionInfo,
                             array<ConnectionMessage> messages);
 
   // Called on a presentation receiver when presentation connection is available
   // from the controlling page.
   OnReceiverConnectionAvailable(
       PresentationSessionInfo sessionInfo,
       PresentationConnection controller_connection_ptr,
       PresentationConnection& receiver_connection_request);
 };