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

third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h

Index: third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h
diff --git a/third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h b/third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h
index 04ad7352edf7a229139f6f39023acfe783223177..1720d398336eb18819f65c5f0b390fff292436b7 100644
--- a/third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h
+++ b/third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h
@@ -10,6 +10,7 @@
 namespace blink {
 
 class WebPresentationConnectionClient;
+enum class WebPresentationConnectionState;
 
 // The delegate Blink provides to WebPresentationReceiverClient in order to get
 // updates.
@@ -20,6 +21,13 @@ class BLINK_PLATFORM_EXPORT WebPresentationReceiver {
   // Called when receiver page gets an incoming connection.
   virtual void onReceiverConnectionAvailable(
       WebPresentationConnectionClient*) = 0;
+
+  // Called when receiver page gets destroyed.
+  virtual void didChangeSessionState(WebPresentationConnectionState) = 0;
+
+  // Called when any PresentationConnection object on receiver page invokes
+  // connnection.terminate().
+  virtual void closeWindow() = 0;
 };
 
 }  // namespace blink