Cleanup chrome/browser/metrics url constants

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 1753 matching lines @@
       'browser/metrics/thread_watcher.cc',
       'browser/metrics/thread_watcher.h',
       'browser/metrics/thread_watcher_android.cc',
       'browser/metrics/thread_watcher_android.h',
       'browser/metrics/thread_watcher_report_hang.cc',
       'browser/metrics/thread_watcher_report_hang.h',
       'browser/metrics/time_ticks_experiment_win.cc',
       'browser/metrics/time_ticks_experiment_win.h',
       'browser/metrics/variations/generated_resources_map.h',
       'browser/metrics/variations/generated_resources_map_lookup.cc',
+      'browser/metrics/variations/url_constants.cc',
+      'browser/metrics/variations/url_constants.h',
       'browser/metrics/variations/variations_registry_syncer_win.cc',
       'browser/metrics/variations/variations_registry_syncer_win.h',
       'browser/metrics/variations/variations_request_scheduler.cc',
       'browser/metrics/variations/variations_request_scheduler.h',
       'browser/metrics/variations/variations_seed_store.cc',
       'browser/metrics/variations/variations_seed_store.h',
       'browser/metrics/variations/variations_service.cc',
       'browser/metrics/variations/variations_service.h',
     ],
     'chrome_browser_nacl_sources': [
@@ skipping 1081 matching lines @@
       'browser/task_management/providers/browser_process_task.h',
       'browser/task_management/providers/child_process_task_provider.cc',
       'browser/task_management/providers/child_process_task_provider.h',
       'browser/task_management/providers/child_process_task.cc',
       'browser/task_management/providers/child_process_task.h',
       'browser/task_management/providers/task_provider_observer.h',
       'browser/task_management/providers/task_provider.cc',
       'browser/task_management/providers/task_provider.h',
       'browser/task_management/providers/task.cc',
       'browser/task_management/providers/task.h',
-      
+
       # Old Task Manager Sources:
       'browser/task_manager/background_information.cc',
       'browser/task_manager/background_information.h',
       'browser/task_manager/browser_process_resource_provider.cc',
       'browser/task_manager/browser_process_resource_provider.h',
       'browser/task_manager/child_process_resource_provider.cc',
       'browser/task_manager/child_process_resource_provider.h',
       'browser/task_manager/extension_information.cc',
       'browser/task_manager/extension_information.h',
       'browser/task_manager/guest_information.cc',
@@ skipping 960 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' ]
         },
       ],
     },],
   ],
 }