Revert the comment change in ServiceWorkerGlobalScopeProxy.cpp of https://crrev.com/2376403004

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 170 matching lines @@
   // promise rejection or an uncaught runtime script error.
   waitUntilObserver->didDispatchEvent(false /* errorOccurred */);
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchForeignFetchEvent(
     int responseID,
     int eventFinishID,
     const WebServiceWorkerRequest& webRequest) {
   if (!OriginTrials::foreignFetchEnabled(workerGlobalScope())) {
     // If origin trial tokens have expired, or are otherwise no longer valid
-    // no events should be dispatched. We can check it in the browser process if
-    // the service worker is installed after M56. But if the service worker was
-    // installed in old version of Chrome (< M56) we have to check it in the
-    // renderer process (here).
+    // no events should be dispatched.
+    // TODO(mek): Ideally the browser wouldn't even start the service worker
+    // if its tokens have expired.
     ServiceWorkerGlobalScopeClient::from(workerGlobalScope())
         ->respondToFetchEvent(responseID, WTF::currentTime());
     ServiceWorkerGlobalScopeClient::from(workerGlobalScope())
         ->didHandleFetchEvent(eventFinishID,
                               WebServiceWorkerEventResultCompleted,
                               WTF::currentTime());
     return;
   }
 
   ScriptState::Scope scope(
@@ skipping 203 matching lines @@
   return *m_document;
 }
 
 ServiceWorkerGlobalScope* ServiceWorkerGlobalScopeProxy::workerGlobalScope()
     const {
   DCHECK(m_workerGlobalScope);
   return m_workerGlobalScope;
 }
 
 }  // namespace blink