Enable the Push and Notification Service Worker events without a flag.

chrome/browser/notifications/platform_notification_service_browsertest.cc

Index: chrome/browser/notifications/platform_notification_service_browsertest.cc
diff --git a/chrome/browser/notifications/platform_notification_service_browsertest.cc b/chrome/browser/notifications/platform_notification_service_browsertest.cc
index ba850bd4df4234ee8e154b599184d31d138e4eba..d48d255dae5c7585946e2a15a636d7f5c5b96426 100644
--- a/chrome/browser/notifications/platform_notification_service_browsertest.cc
+++ b/chrome/browser/notifications/platform_notification_service_browsertest.cc
@@ -21,7 +21,6 @@
 #include "components/infobars/core/confirm_infobar_delegate.h"
 #include "components/infobars/core/infobar.h"
 #include "components/infobars/core/infobar_manager.h"
-#include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "net/base/filename_util.h"
 #include "net/test/spawned_test_server/spawned_test_server.h"
@@ -90,7 +89,6 @@ class PlatformNotificationServiceBrowserTest : public InProcessBrowserTest {
   ~PlatformNotificationServiceBrowserTest() override {}
 
   // InProcessBrowserTest overrides.
-  void SetUpCommandLine(base::CommandLine* command_line) override;
   void SetUp() override;
   void SetUpOnMainThread() override;
   void TearDown() override;
@@ -136,14 +134,6 @@ PlatformNotificationServiceBrowserTest::PlatformNotificationServiceBrowserTest()
       test_page_url_(std::string("files/") + kTestFileName) {
 }
 
-void PlatformNotificationServiceBrowserTest::SetUpCommandLine(
-    base::CommandLine* command_line) {
-  command_line->AppendSwitch(
-      switches::kEnableExperimentalWebPlatformFeatures);
-
-  InProcessBrowserTest::SetUpCommandLine(command_line);
-}
-
 void PlatformNotificationServiceBrowserTest::SetUp() {
   ui_manager_.reset(new StubNotificationUIManager);
   https_server_.reset(new net::SpawnedTestServer(