[Presentation API] Allow PresentationConnection state change to "Connecting"

third_party/WebKit/LayoutTests/presentation/resources/presentation-service-mock.js

 /*
  * Mock implementation of mojo PresentationService.
  */
 
 "use strict";
 
 let presentationServiceMock = loadMojoModules(
     'presentationServiceMock',
     [
       'third_party/WebKit/public/platform/modules/presentation/presentation.mojom',
       'mojo/public/js/bindings',
     ]).then(mojo => {
-      let [ presentationService, bindings ] = mojo.modules;
+      let [ presentation, bindings ] = mojo.modules;

[mark a. foltz, 2017/01/20 18:48:22]

nit: Can you leave this as presentationService, so it's not ambiguous with
navigator.presentation?

[takumif, 2017/01/23 19:58:12]

Done.

 
       class PresentationServiceMock {
         constructor(interfaceProvider) {
           interfaceProvider.addInterfaceOverrideForTesting(
-              presentationService.PresentationService.name,
+              presentation.PresentationService.name,
               handle => this.bindingSet_.addBinding(this, handle));
           this.interfaceProvider_ = interfaceProvider;
           this.pendingResponse_ = null;
           this.bindingSet_ = new bindings.BindingSet(
-              presentationService.PresentationService);
+              presentation.PresentationService);
+        }
+
+        setClient(client) {
+          this.client_ = client;
         }
 
         startSession(urls) {
           return Promise.resolve({
               sessionInfo: { url: urls[0], id: 'fakesession' },
               error: null,
           });
         }
 
         joinSession(urls) {
           return Promise.resolve({
               sessionInfo: { url: urls[0], id: 'fakeSessionId' },
               error: null,
           });
         }
+
+        closeConnection(url, id) {
+          this.client_.onConnectionClosed(
+            { url: url, id: id },
+            presentation.PresentationConnectionCloseReason.CLOSED,
+            ''
+          );
+        }
       }
 
       return new PresentationServiceMock(mojo.frameInterfaces);
     });