Create component to expose network usage stats to consumers.

chrome/chrome_browser.gypi

 # Copyright 2012 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 3090 matching lines @@
         '../components/components.gyp:captive_portal',
         '../components/components.gyp:cloud_devices_common',
         '../components/components.gyp:component_metrics_proto',
         '../components/components.gyp:component_updater',
         '../components/components.gyp:compression',
         '../components/components.gyp:content_settings_content_common',
         '../components/components.gyp:content_settings_core_browser',
         '../components/components.gyp:content_settings_core_common',
         '../components/components.gyp:crx_file',
         '../components/components.gyp:data_reduction_proxy_core_browser',
+        '../components/components.gyp:data_usage_core',
         '../components/components.gyp:data_use_measurement_core',
         '../components/components.gyp:domain_reliability',
         '../components/components.gyp:enhanced_bookmarks',
         '../components/components.gyp:favicon_base',
         '../components/components.gyp:favicon_core',
         '../components/components.gyp:gcm_driver',
         '../components/components.gyp:google_core_browser',
         '../components/components.gyp:handoff',
         '../components/components.gyp:history_core_browser',
         '../components/components.gyp:history_core_common',
@@ skipping 1002 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }