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

content/public/browser/presentation_service_delegate.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_PUBLIC_BROWSER_PRESENTATION_SERVICE_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_PRESENTATION_SERVICE_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 120 matching lines @@
   // successfully.
   // |error_cb|: Invoked with error reason, if joining failed.
   virtual void JoinSession(
       int render_process_id,
       int render_frame_id,
       const std::string& presentation_url,
       const std::string& presentation_id,
       const PresentationSessionStartedCallback& success_cb,
       const PresentationSessionErrorCallback& error_cb) = 0;
 
-  // Close an existing presentation session.
+  // Closes an existing presentation session.
   // |render_process_id|, |render_frame_id|: ID for originating frame.
   // |presentation_id|: The ID of the presentation to close.
   virtual void CloseSession(int render_process_id,
                             int render_frame_id,
                             const std::string& presentation_id) = 0;
 
+  // Terminates an existing presentation session.
+  // |render_process_id|, |render_frame_id|: ID for originating frame.
+  // |presentation_id|: The ID of the presentation to terminate.
+  virtual void TerminateSession(int render_process_id,
+                                int render_frame_id,
+                                const std::string& presentation_id) = 0;
+
   // Listen for messages for a presentation session.

[whywhat, 2015/11/20 06:26:49]

nit: should you add 's' to the leading verb here and for the
ListenForStateChange below?

[mlamouri (slow - plz ping), 2015/11/27 11:48:47]

Done.

   // |render_process_id|, |render_frame_id|: ID for originating frame.
   // |session|: URL and ID of presentation session to listen for messages.
   // |message_cb|: Invoked with a non-empty list of messages whenever there are
   // messages.
   virtual void ListenForSessionMessages(
       int render_process_id,
       int render_frame_id,
       const content::PresentationSessionInfo& session,
       const PresentationSessionMessageCallback& message_cb) = 0;
 
@@ skipping 15 matching lines @@
   // there is a state change.
   virtual void ListenForSessionStateChange(
       int render_process_id,
       int render_frame_id,
       const SessionStateChangedCallback& state_changed_cb) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PRESENTATION_SERVICE_DELEGATE_H_