Introduce ServiceWorker.ActivatedWorkerPreparationForMainFrame.Time UMA.

content/browser/service_worker/service_worker_dispatcher_host.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_dispatcher_host.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 813 matching lines @@
     bad_message::ReceivedBadMessage(
         this, bad_message::SWDH_SET_HOSTED_VERSION_NO_HOST);
     return;
   }
   if (!provider_host->IsContextAlive())
     return;
 
   // We might not be STARTING if the stop sequence was entered (STOPPING) or
   // ended up being detached (STOPPED).
   ServiceWorkerVersion* version = GetContext()->GetLiveVersion(version_id);
-  if (!version || version->running_status() != ServiceWorkerVersion::STARTING)
+  if (!version ||
+      version->running_status() !=
+          ServiceWorkerVersion::RunningStatus::STARTING) {
     return;
+  }
 
   if (!provider_host->SetHostedVersion(version)) {
     bad_message::ReceivedBadMessage(this, bad_message::SWDH_SET_HOSTED_VERSION);
     return;
   }
 
   // Retrieve the registration associated with |version|. The registration
   // must be alive because the version keeps it during starting worker.
   ServiceWorkerRegistration* registration =
       GetContext()->GetLiveRegistration(version->registration_id());
@@ skipping 560 matching lines @@
   if (!handle) {
     bad_message::ReceivedBadMessage(this,
                                     bad_message::SWDH_TERMINATE_BAD_HANDLE);
     return;
   }
   handle->version()->StopWorker(
       base::Bind(&ServiceWorkerUtils::NoOpStatusCallback));
 }
 
 }  // namespace content