Record the data use of service worker initiated requests

components/data_use_measurement/core/data_use_user_data.cc

 // Copyright 2015 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 "components/data_use_measurement/core/data_use_user_data.h"
 
 #if defined(OS_ANDROID)
 #include "base/android/application_status_listener.h"
 #endif
 
@@ skipping 110 matching lines @@
     case NTP_SNIPPETS_SUGGESTIONS:
       return "NTPSnippetsSuggestions";
     case NTP_SNIPPETS_THUMBNAILS:
       return "NTPSnippetsThumbnails";
     case DOODLE:
       return "Doodle";
     case UKM:
       return "UKM";
     case PAYMENTS:
       return "Payments";
+    case SERVICE_WORKER:
+      return "ServiceWorker";
   }
   return "INVALID";
 }
 
 // static
 void DataUseUserData::AttachToFetcher(net::URLFetcher* fetcher,
                                       ServiceName service_name) {
   fetcher->SetURLRequestUserData(kUserDataKey,
                                  base::Bind(&Create, service_name));
 }
 
 }  // namespace data_use_measurement