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

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

Index: third_party/WebKit/Source/modules/presentation/PresentationReceiver.cpp
diff --git a/third_party/WebKit/Source/modules/presentation/PresentationReceiver.cpp b/third_party/WebKit/Source/modules/presentation/PresentationReceiver.cpp
index 14aea2196ba1860d7528fa487ad86f398c4263c5..0419e13923f9475d05673d9457da00e657b60b90 100644
--- a/third_party/WebKit/Source/modules/presentation/PresentationReceiver.cpp
+++ b/third_party/WebKit/Source/modules/presentation/PresentationReceiver.cpp
@@ -9,6 +9,7 @@
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
+#include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/UseCounter.h"
 #include "modules/presentation/PresentationConnection.h"
@@ -62,6 +63,27 @@ WebPresentationConnection* PresentationReceiver::onReceiverConnectionAvailable(
   return connection;
 }
 
+void PresentationReceiver::didChangeSessionState(
+    WebPresentationConnectionState state) {
+  // TODO(zhaobin): remove or modify DCHECK when receiver supports more
+  // connection state change.
+  DCHECK(state == WebPresentationConnectionState::Terminated);
+
+  for (auto connection : m_connectionList->connections())
+    connection->didChangeState(state, false /* shouldDispatchEvent */);
+}
+
+void PresentationReceiver::terminateConnection() {
+  if (!frame())
+    return;
+
+  auto* window = frame()->domWindow();
+  if (!window || window->closed())
+    return;
+
+  window->close(frame()->document());
+}
+
 void PresentationReceiver::registerConnection(
     PresentationConnection* connection) {
   DCHECK(m_connectionList);