Adds a context message of the security origin for web notifications.

chrome/browser/notifications/notification_browsertest.cc

Index: chrome/browser/notifications/notification_browsertest.cc
diff --git a/chrome/browser/notifications/notification_browsertest.cc b/chrome/browser/notifications/notification_browsertest.cc
index f189feac7d352bde2d31999643effd8d72da25b0..d1a2323f877c0b12b0b5bee26565de5307da3d35 100644
--- a/chrome/browser/notifications/notification_browsertest.cc
+++ b/chrome/browser/notifications/notification_browsertest.cc
@@ -839,3 +839,22 @@ IN_PROC_BROWSER_TEST_F(NotificationsTest,
 
   ASSERT_EQ(1, GetNotificationPopupCount());
 }
+
+IN_PROC_BROWSER_TEST_F(NotificationsTest, TestDisplayOriginContextMessage) {
+  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+
+  // Creates a simple notification.
+  AllowAllOrigins();
+  ui_test_utils::NavigateToURL(browser(), GetTestPageURL());
+
+  std::string result = CreateSimpleNotification(browser(), true);
+
+  ASSERT_EQ(1, GetNotificationCount());
+  message_center::NotificationList::Notifications notifications =
+      message_center::MessageCenter::Get()->GetVisibleNotifications();
+  GURL base_url = embedded_test_server()->base_url();
+  std::string expected_display_origin = base::StringPrintf(
+      "%s:%s", base_url.host().c_str(), base_url.port().c_str());
+  EXPECT_EQ(base::UTF8ToUTF16(expected_display_origin),
+            (*notifications.rbegin())->context_message());
+}