[Presentation API] Use connection proxy to change connection state to 'closed'

third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp

 // Copyright 2014 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 "modules/presentation/PresentationConnection.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/Document.h"
@@ skipping 145 matching lines @@
       m_binaryType(BinaryTypeBlob),
       m_proxy(nullptr) {}
 
 PresentationConnection::~PresentationConnection() {
   ASSERT(!m_blobLoader);
 }
 
 void PresentationConnection::bindProxy(
     std::unique_ptr<WebPresentationConnectionProxy> proxy) {
   DCHECK(proxy);
-  // TODO(zhaobin): Restore to DCHECK(!m_proxy) when reconnect() is properly
-  // implemented.
   m_proxy = std::move(proxy);
 }
 
 // static
 PresentationConnection* PresentationConnection::take(
     ScriptPromiseResolver* resolver,
     const WebPresentationSessionInfo& sessionInfo,
     PresentationRequest* request) {
   ASSERT(resolver);
   ASSERT(request);
@@ skipping 217 matching lines @@
   return m_state;
 }
 
 void PresentationConnection::close() {
   if (m_state != WebPresentationConnectionState::Connecting &&
       m_state != WebPresentationConnectionState::Connected) {
     return;
   }
   WebPresentationClient* client = presentationClient(getExecutionContext());
   if (client)
-    client->closeSession(m_url, m_id);
+    client->closeSession(m_url, m_id, m_proxy.get());
 
   tearDown();
 }
 
 void PresentationConnection::terminate() {
   if (m_state != WebPresentationConnectionState::Connected)
     return;
   WebPresentationClient* client = presentationClient(getExecutionContext());
   if (client)
     client->terminateSession(m_url, m_id);
@@ skipping 89 matching lines @@
 void PresentationConnection::tearDown() {
   // Cancel current Blob loading if any.
   if (m_blobLoader) {
     m_blobLoader->cancel();
     m_blobLoader.clear();
   }
   m_messages.clear();
 }
 
 }  // namespace blink