Updates SessionMessage to ConnectionMessage.

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 22 matching lines @@
   UNKNOWN,
 };
 
 struct PresentationError {
   PresentationErrorType error_type;
   string message;
 };
 
 enum PresentationMessageType {
   TEXT,
-  ARRAY_BUFFER,
-  BLOB,
+  BINARY,
 };
 
-struct SessionMessage {
+struct ConnectionMessage {
   PresentationMessageType type;
   // Used when message type is TEXT.
   string? message;
-  // Used when message type is ARRAY_BUFFER or BLOB.
+  // Used when message type is BINARY.

[dcheng, 2016/12/13 08:25:14]

Please add a TODO to make this a mojo union (I'd suggest
https://crbug.com/632623 as a reasonable umbrella bug for this)

[CJ, 2016/12/13 22:05:35]

Done.
Ah is this related to your other comment?

   array<uint8>? data;
 };
 
 interface PresentationService {
   // Sets the PresentationServiceClient.
   SetClient(PresentationServiceClient client);
 
   // Called when the frame sets or changes the default presentation URLs.
   // When the default presentation is started on this frame,
   // PresentationServiceClient::OnDefaultSessionStarted will be invoked.
@@ skipping 26 matching lines @@
   // session (i.e. when the page navigates or the user opens another tab)
   // silently and without user action.
   JoinSession(array<url.mojom.Url> presentation_urls, string? presentation_id)
       => (PresentationSessionInfo? sessionInfo, PresentationError? error);
 
   // 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.
-  SendSessionMessage(PresentationSessionInfo sessionInfo,
-                     SessionMessage message_request) => (bool success);
+  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::OnSessionMessagesReceived.
+  // PresentationServiceClient::OnConnectionMessagesReceived.
   // This is called after a presentation session is created.
-  ListenForSessionMessages(PresentationSessionInfo sessionInfo);
+  ListenForConnectionMessages(PresentationSessionInfo sessionInfo);
 };
 
 interface PresentationServiceClient {
   // Called when the client tries to listen for screen availability changes for
   // presentation of |url| but it is not supported by the device or underlying
   // platform. This can also be called if the device is currently in a mode
   // where it can't do screen discoveries (eg. low battery).
   OnScreenAvailabilityNotSupported(url.mojom.Url url);
 
   // Called when the client is listening for screen availability for
   // presentation of |url| and the state changes. When the client starts to
   // listen for screen availability, this method will always be called to give
   // the current known state. It will then be called to notify of state updates.
   OnScreenAvailabilityUpdated(url.mojom.Url url, bool available);
 
   // Called when the state of PresentationConnection |connection| started on
   // this frame has changed to |newState|.
   OnConnectionStateChanged(PresentationSessionInfo connection,
                            PresentationConnectionState newState);
 
   // Caled when the state of |connection| started on this frame has changed to
   // CLOSED.
   OnConnectionClosed(PresentationSessionInfo connection,
                      PresentationConnectionCloseReason reason,
                      string message);
 
-  // See PresentationService::ListenForSessionMessages.
-  OnSessionMessagesReceived(PresentationSessionInfo sessionInfo,
-                            array<SessionMessage> messages);
+  // See PresentationService::ListenForConnectionMessages.
+  OnConnectionMessagesReceived(PresentationSessionInfo sessionInfo,
+                            array<ConnectionMessage> messages);
 
   // See PresentationService::SetDefaultPresentationURL.
   OnDefaultSessionStarted(PresentationSessionInfo sessionInfo);
 
   // See PresentationService::ListeningForReceiverPageRendered.
   OnReceiverConnectionAvailable(PresentationSessionInfo sessionInfo);
 };