[Presentation API] (1-UA) fire PresentationConnection onterminate event if receiver page gets destr…

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 391 matching lines @@
     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);
+    client->terminateConnection(m_url, m_id);
 
   tearDown();
 }
 
 bool PresentationConnection::matches(
     const WebPresentationSessionInfo& sessionInfo) const {
   return m_url == KURL(sessionInfo.url) && m_id == String(sessionInfo.id);
 }
 
 bool PresentationConnection::matches(const String& id, const KURL& url) const {
   return m_url == url && m_id == id;
 }
 
 void PresentationConnection::didChangeState(
     WebPresentationConnectionState state) {
+  didChangeState(state, true /* shouldDispatchEvent */);
+}
+
+void PresentationConnection::didChangeState(
+    WebPresentationConnectionState state,
+    bool shouldDispatchEvent) {
   if (m_state == state)
     return;
 
   m_state = state;
+
+  if (!shouldDispatchEvent)
+    return;
+
   switch (m_state) {
     case WebPresentationConnectionState::Connecting:
       NOTREACHED();
       return;
     case WebPresentationConnectionState::Connected:
       dispatchStateChangeEvent(Event::create(EventTypeNames::connect));
       return;
     case WebPresentationConnectionState::Terminated:
       dispatchStateChangeEvent(Event::create(EventTypeNames::terminate));
       return;
@@ skipping 60 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