Implementing closeSession from WebPresentationClient to PresentationService.

content/renderer/presentation/presentation_dispatcher.cc

 // 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.
 
 #include "content/renderer/presentation/presentation_dispatcher.h"
 
 #include "base/logging.h"
 #include "content/common/presentation/presentation_service.mojom.h"
 #include "content/public/common/service_registry.h"
 #include "content/public/renderer/render_frame.h"
@@ skipping 102 matching lines @@
   // OnSessionCreated() is called. |callback| needs to be alive and also needs
   // to be destroyed so we transfer its ownership to the mojo callback.
   presentation_service_->JoinSession(
       presentationUrl.utf8(),
       presentationId.utf8(),
       base::Bind(&PresentationDispatcher::OnSessionCreated,
           base::Unretained(this),
           base::Owned(callback)));
 }
 
+void PresentationDispatcher::closeSession(
+    const blink::WebString& presentationUrl,
+    const blink::WebString& presentationId) {
+  ConnectToPresentationServiceIfNeeded();
+
+  presentation_service_->CloseSession(
+      presentationUrl.utf8(),
+      presentationId.utf8());
+}
+
 void PresentationDispatcher::DidChangeDefaultPresentation() {
   GURL presentation_url(GetPresentationURLFromFrame(render_frame()));
 
   ConnectToPresentationServiceIfNeeded();
   presentation_service_->SetDefaultPresentationURL(
       presentation_url.spec(), mojo::String());
 }
 
 void PresentationDispatcher::OnScreenAvailabilityChanged(
     const std::string& presentation_url, bool available) {
@@ skipping 50 matching lines @@
     return;
 
   render_frame()->GetServiceRegistry()->ConnectToRemoteService(
       &presentation_service_);
   presentation_service_->ListenForDefaultSessionStart(base::Bind(
       &PresentationDispatcher::OnDefaultSessionStarted,
       base::Unretained(this)));
 }
 
 }  // namespace content