[Notifications] Add interactive ui test for Notification.close()

R=peter@chromium.org

Change-Id: Ia25e9c21b020dfa524c5d2e8ccbf7ba5bf440dcd
Reviewed-on: https://chromium-review.googlesource.com/888525Reviewed-by: Peter Beverloo <peter@chromium.org>
Commit-Queue: Anita Woodruff <awdf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532416}

chrome/browser/notifications/platform_notification_service_interactive_uitest.cc

@@ -347,6 +347,20 @@ IN_PROC_BROWSER_TEST_F(PlatformNotificationServiceBrowserTest,
                    all_options_notification.timestamp().ToJsTime());
 }
 
+IN_PROC_BROWSER_TEST_F(PlatformNotificationServiceBrowserTest,
+                       DisplayAndCloseNonPersistentNotification) {
+  ASSERT_NO_FATAL_FAILURE(GrantNotificationPermissionForTest());
+
+  std::string script_result;
+  ASSERT_TRUE(RunScript("DisplayAndCloseNonPersistentNotification('')",
+                        &script_result));
+  EXPECT_EQ("ok", script_result);
+
+  std::vector<message_center::Notification> notifications =
+      GetDisplayedNotifications(false /* is_persistent */);
+  EXPECT_EQ(0u, notifications.size());
+}
+
 IN_PROC_BROWSER_TEST_F(PlatformNotificationServiceBrowserTest,
                        WebNotificationOptionsReflection) {
   ASSERT_NO_FATAL_FAILURE(GrantNotificationPermissionForTest());

chrome/test/data/notifications/platform_notification_service.html

@@ -31,6 +31,19 @@
           domAutomationController.send('could not show notification'));
       }
 
+      // Instantiates a new non-persistent notification with the given |title|
+      // and |options| and then closes it.
+      // Forwards 'ok' upon receiving the 'close' event.
+      function DisplayAndCloseNonPersistentNotification(title, options) {
+        const notification = new Notification(title, options || {});
+        notification.addEventListener('show', e => {
+          notification.close();
+        });
+        notification.addEventListener('close', e => {
+          domAutomationController.send('ok');
+        });
+      }
+
       // Renews the registered Service Worker registration for this page, then
       // displays a notification on the activated ServiceWorkerRegistration.
       function DisplayPersistentNotification(title, options) {