Eliminate OmniboxMetricsProvider listening to notification

ios/chrome/ios_chrome.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 246 matching lines @@
         'browser/net/chrome_cookie_store_ios_client.h',
         'browser/net/chrome_cookie_store_ios_client.mm',
         'browser/net/image_fetcher.h',
         'browser/net/image_fetcher.mm',
         'browser/net/metrics_network_client.h',
         'browser/net/metrics_network_client.mm',
         'browser/net/metrics_network_client_manager.h',
         'browser/net/metrics_network_client_manager.mm',
         'browser/net/retryable_url_fetcher.h',
         'browser/net/retryable_url_fetcher.mm',
-        'browser/omnibox/omnibox_event_global_tracker.cc',
-        'browser/omnibox/omnibox_event_global_tracker.h',
         'browser/passwords/password_generation_utils.h',
         'browser/passwords/password_generation_utils.mm',
         'browser/pref_names.cc',
         'browser/pref_names.h',
         'browser/prefs/pref_observer_bridge.h',
         'browser/prefs/pref_observer_bridge.mm',
         'browser/procedural_block_types.h',
         'browser/search/search_util.cc',
         'browser/search/search_util.h',
         'browser/search_engines/search_engines_util.cc',
@@ skipping 199 matching lines @@
             '../../components/components.gyp:omnibox_browser',
             '../../components/components.gyp:rlz',
             '../../components/components.gyp:search_engines',
             '../../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }