[Presentation API] (4th)(1-UA blink side) Add WebPresentationConnection and WebPresentationConnecti…

third_party/WebKit/public/platform/modules/presentation/WebPresentationController.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 WebPresentationController_h
 #define WebPresentationController_h
 
 #include "public/platform/WebCommon.h"
 
 namespace blink {
 
 struct WebPresentationSessionInfo;
+class WebPresentationConnection;
 class WebString;
 
 enum class WebPresentationConnectionCloseReason { Error = 0, Closed, WentAway };
 
 enum class WebPresentationConnectionState {
   Connecting = 0,
   Connected,
   Closed,
   Terminated,
 };
 
 // The delegate Blink provides to WebPresentationClient in order to get updates.
 class BLINK_PLATFORM_EXPORT WebPresentationController {
  public:
   virtual ~WebPresentationController() {}
 
   // Called when the presentation session is started by the embedder using
   // the default presentation URL and id.
-  virtual void didStartDefaultSession(const WebPresentationSessionInfo&) = 0;
+  virtual WebPresentationConnection* didStartDefaultSession(
+      const WebPresentationSessionInfo&) = 0;
 
   // Called when the state of a session changes.
   virtual void didChangeSessionState(const WebPresentationSessionInfo&,
                                      WebPresentationConnectionState) = 0;
 
   // Called when a connection closes.
   virtual void didCloseConnection(const WebPresentationSessionInfo&,
                                   WebPresentationConnectionCloseReason,
                                   const WebString& message) = 0;
 
   // Called when a text message of a session is received.
   virtual void didReceiveSessionTextMessage(const WebPresentationSessionInfo&,
                                             const WebString& message) = 0;
 
   // Called when a binary message of a session is received.
   virtual void didReceiveSessionBinaryMessage(const WebPresentationSessionInfo&,
                                               const uint8_t* data,
                                               size_t length) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebPresentationController_h