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

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

 // 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 "modules/presentation/PresentationReceiver.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
+#include "core/frame/DOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "modules/presentation/PresentationConnection.h"
 #include "modules/presentation/PresentationConnectionList.h"
 #include "public/platform/modules/presentation/WebPresentationClient.h"
 
 namespace blink {
 
 PresentationReceiver::PresentationReceiver(LocalFrame* frame,
                                            WebPresentationClient* client)
     : DOMWindowProperty(frame) {
@@ skipping 30 matching lines @@
     return;
 
   if (m_connectionListProperty->getState() ==
       ScriptPromisePropertyBase::Pending)
     m_connectionListProperty->resolve(m_connectionList);
   else if (m_connectionListProperty->getState() ==
            ScriptPromisePropertyBase::Resolved)
     m_connectionList->dispatchConnectionAvailableEvent(connection);
 }
 
+void PresentationReceiver::didChangeSessionState(
+    WebPresentationConnectionState state) {
+  DCHECK(state == WebPresentationConnectionState::Terminated);
+
+  for (auto connection : m_connectionList->connections())
+    connection->didChangeState(state);
+}
+
+void PresentationReceiver::closeWindow() {
+  DOMWindow* window = frame()->domWindow();
+  if (!window->closed())

[haraken, 2016/11/08 23:44:50]

You need to check if frame(), frame()->domWindow() and frame()->document() are
not null.

[zhaobin, 2016/11/09 03:40:12]

Done.

+    window->close(frame()->document());
+}
+
 void PresentationReceiver::registerConnection(
     PresentationConnection* connection) {
   DCHECK(m_connectionList);
   m_connectionList->addConnection(connection);
 }
 
 DEFINE_TRACE(PresentationReceiver) {
   visitor->trace(m_connectionList);
   visitor->trace(m_connectionListProperty);
   DOMWindowProperty::trace(visitor);
 }
 }  // namespace blink