Create a DataUseRecorder instance for each page load in Chrome.

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3103 matching lines @@
     "../browser/content_settings/content_settings_usages_state_unittest.cc",
     "../browser/content_settings/cookie_settings_factory_unittest.cc",
     "../browser/content_settings/host_content_settings_map_unittest.cc",
     "../browser/content_settings/mock_settings_observer.cc",
     "../browser/content_settings/mock_settings_observer.h",
     "../browser/content_settings/tab_specific_content_settings_unittest.cc",
     "../browser/custom_handlers/protocol_handler_registry_unittest.cc",
     "../browser/data_usage/tab_id_annotator_unittest.cc",
     "../browser/data_usage/tab_id_provider_unittest.cc",
     "../browser/data_use_measurement/chrome_data_use_ascriber_service_unittest.cc",
+    "../browser/data_use_measurement/chrome_data_use_ascriber_unittest.cc",
     "../browser/devtools/devtools_network_controller_unittest.cc",
     "../browser/download/all_download_item_notifier_unittest.cc",
     "../browser/download/chrome_download_manager_delegate_unittest.cc",
     "../browser/download/download_history_unittest.cc",
     "../browser/download/download_item_model_unittest.cc",
     "../browser/download/download_path_reservation_tracker_unittest.cc",
     "../browser/download/download_prefs_unittest.cc",
     "../browser/download/download_query_unittest.cc",
     "../browser/download/download_request_infobar_delegate_unittest.cc",
     "../browser/download/download_request_limiter_unittest.cc",
@@ skipping 1992 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }