Presentation API: implement renderer side of PresentationConnection.close().

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 <map>
 #include <queue>
 
@@ skipping 58 matching lines @@
                   const blink::WebString& presentationId,
                   const blink::WebString& message) override;
   void sendArrayBuffer(const blink::WebString& presentationUrl,
                        const blink::WebString& presentationId,
                        const uint8* data,
                        size_t length) override;
   void sendBlobData(const blink::WebString& presentationUrl,
                     const blink::WebString& presentationId,
                     const uint8* data,
                     size_t length) override;
+  void closeSession(const blink::WebString& presentationUrl,
+                    const blink::WebString& presentationId) override;
   void terminateSession(const blink::WebString& presentationUrl,
                         const blink::WebString& presentationId) override;
   void getAvailability(
       const blink::WebString& availabilityUrl,
       blink::WebPresentationAvailabilityCallbacks* callbacks) override;
   void startListening(blink::WebPresentationAvailabilityObserver*) override;
   void stopListening(blink::WebPresentationAvailabilityObserver*) override;
   void setDefaultPresentationUrl(const blink::WebString& url) override;
 
   // RenderFrameObserver implementation.
@@ skipping 67 matching lines @@
   // Updates the listening state of availability for |status| and notifies the
   // client.
   void UpdateListeningState(AvailabilityStatus* status);
 
   DISALLOW_COPY_AND_ASSIGN(PresentationDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PRESENTATION_PRESENTATION_DISPATCHER_H_