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

third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h

 // Copyright 2016 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 WebPresentationReceiver_h
 #define WebPresentationReceiver_h
 
 #include "public/platform/WebCommon.h"
 
 namespace blink {
 
 struct WebPresentationSessionInfo;
+class WebPresentationConnection;
 
 // The delegate Blink provides to WebPresentationReceiverClient in order to get
 // updates.
 class BLINK_PLATFORM_EXPORT WebPresentationReceiver {
  public:
   virtual ~WebPresentationReceiver() = default;
 
   // Called when receiver page gets an incoming connection.
-  virtual void onReceiverConnectionAvailable(
+  virtual WebPresentationConnection* onReceiverConnectionAvailable(
       const WebPresentationSessionInfo&) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebPresentationReceiver_h