[Clean-up] Remove NetworkStats code, which has been dead code since July 2014.

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 1713 matching lines @@
       'browser/metrics/google_update_metrics_provider_win.cc',
       'browser/metrics/google_update_metrics_provider_win.h',
       'browser/metrics/jumplist_metrics_win.cc',
       'browser/metrics/jumplist_metrics_win.h',
       'browser/metrics/metrics_memory_details.cc',
       'browser/metrics/metrics_memory_details.h',
       'browser/metrics/metrics_reporting_state.cc',
       'browser/metrics/metrics_reporting_state.h',
       'browser/metrics/metrics_services_manager.cc',
       'browser/metrics/metrics_services_manager.h',
-      'browser/metrics/network_stats_uploader.cc',
-      'browser/metrics/network_stats_uploader.h',
       'browser/metrics/omnibox_metrics_provider.cc',
       'browser/metrics/omnibox_metrics_provider.h',
       'browser/metrics/perf_provider_chromeos.cc',
       'browser/metrics/perf_provider_chromeos.h',
       'browser/metrics/signin_status_metrics_provider.cc',
       'browser/metrics/signin_status_metrics_provider.h',
       'browser/metrics/signin_status_metrics_provider_base.cc',
       'browser/metrics/signin_status_metrics_provider_base.h',
       'browser/metrics/signin_status_metrics_provider_chromeos.cc',
       'browser/metrics/signin_status_metrics_provider_chromeos.h',
@@ skipping 59 matching lines @@
       'browser/net/evicted_domain_cookie_counter.cc',
       'browser/net/evicted_domain_cookie_counter.h',
       'browser/net/http_server_properties_manager_factory.cc',
       'browser/net/http_server_properties_manager_factory.h',
       'browser/net/net_error_tab_helper.cc',
       'browser/net/net_error_tab_helper.h',
       'browser/net/net_log_temp_file.cc',
       'browser/net/net_log_temp_file.h',
       'browser/net/net_pref_observer.cc',
       'browser/net/net_pref_observer.h',
-      'browser/net/network_stats.cc',
-      'browser/net/network_stats.h',
       'browser/net/preconnect.cc',
       'browser/net/preconnect.h',
       'browser/net/prediction_options.cc',
       'browser/net/prediction_options.h',
       'browser/net/predictor.cc',
       'browser/net/predictor.h',
       'browser/net/pref_proxy_config_tracker.cc',
       'browser/net/pref_proxy_config_tracker.h',
       'browser/net/pref_proxy_config_tracker_impl.cc',
       'browser/net/pref_proxy_config_tracker_impl.h',
@@ skipping 1946 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }