Record the data use of service worker initiated requests

components/data_use_measurement/core/data_use_user_data.h

 // 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.
 
 #ifndef COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_USER_DATA_H_
 #define COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_USER_DATA_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 47 matching lines @@
     IMAGE_FETCHER_UNTAGGED,
     GAIA,
     CAPTIVE_PORTAL,
     WEB_RESOURCE_SERVICE,
     SIGNIN,
     NTP_SNIPPETS_SUGGESTIONS,
     NTP_SNIPPETS_THUMBNAILS,
     DOODLE,
     UKM,
     PAYMENTS,
+    SERVICE_WORKER,
   };
 
   // Data use broken by content type. This enum must remain synchronized
   // with the enum of the same name in metrics/histograms/histograms.xml.
   // These values are written to logs.  New enum values can be added, but
   // existing enums must never be renumbered or deleted and reused.
   enum DataUseContentType {
     OTHER = 0,
     MAIN_FRAME_HTML = 1,
     NON_MAIN_FRAME_HTML = 2,
@@ skipping 52 matching lines @@
   AppState app_state_;
 
   DataUseContentType content_type_;
 
   DISALLOW_COPY_AND_ASSIGN(DataUseUserData);
 };
 
 }  // namespace data_use_measurement
 
 #endif  // COMPONENTS_DATA_USE_MEASUREMENT_CORE_DATA_USE_USER_DATA_H_