Remove uses of the Legacy Notification API and tests on Linux Aura

chrome/browser/extensions/notifications_apitest.cc

Index: chrome/browser/extensions/notifications_apitest.cc
diff --git a/chrome/browser/extensions/notifications_apitest.cc b/chrome/browser/extensions/notifications_apitest.cc
index 508840b77a67226ca0caa6fb9e7ef7fed466c677..5d4995341bf34b995c49ca69d870cb5760eea704 100644
--- a/chrome/browser/extensions/notifications_apitest.cc
+++ b/chrome/browser/extensions/notifications_apitest.cc
@@ -41,18 +41,6 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, NotificationsNoPermission) {
   ASSERT_TRUE(RunExtensionTest("notifications/has_not_permission")) << message_;
 }
 
-// This test verifies that on RichNotification-enabled platforms HTML
-// notificaitons are disabled.
-#if defined(RUN_MESSAGE_CENTER_TESTS)
-#define MAYBE_NoHTMLNotifications NoHTMLNotifications
-#else
-#define MAYBE_NoHTMLNotifications DISABLED_NoHTMLNotifications
-#endif
-IN_PROC_BROWSER_TEST_F(ExtensionApiTest, MAYBE_NoHTMLNotifications) {
-  ASSERT_TRUE(message_center::IsRichNotificationEnabled());
-  ASSERT_TRUE(RunExtensionTest("notifications/no_html")) << message_;
-}
-
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, NotificationsHasPermission) {
   DesktopNotificationServiceFactory::GetForProfile(browser()->profile())
       ->GrantPermission(GURL(