Enable tracking of objects by default

base/base.gypi

 # Copyright (c) 2011 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 318 matching lines @@
           'threading/worker_pool_posix.cc',
           'threading/worker_pool_posix.h',
           'threading/worker_pool_win.cc',
           'time.cc',
           'time.h',
           'time_win.cc',
           'timer.cc',
           'timer.h',
           'tracked_objects.cc',
           'tracked_objects.h',
+          'tracking_info.cc',
+          'tracking_info.h',
           'tuple.h',
           'utf_offset_string_conversions.cc',
           'utf_offset_string_conversions.h',
           'utf_string_conversion_utils.cc',
           'utf_string_conversion_utils.h',
           'utf_string_conversions.cc',
           'utf_string_conversions.h',
           'values.cc',
           'values.h',
           'value_conversions.cc',
@@ skipping 472 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }