Use CONTINUE_ON_SHUTDOWN for IncidentReportingService tasks.

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 47 matching lines @@
       'browser/bitmap_fetcher/bitmap_fetcher_service.cc',
       'browser/bitmap_fetcher/bitmap_fetcher_service.h',
       'browser/bitmap_fetcher/bitmap_fetcher_service_factory.cc',
       'browser/bitmap_fetcher/bitmap_fetcher_service_factory.h',
       'browser/browser_about_handler.cc',
       'browser/browser_about_handler.h',
       'browser/browser_shutdown.cc',
       'browser/browser_shutdown.h',
       'browser/browser_util_win.cc',
       'browser/browser_util_win.h',
+      'browser/browser_hangs_experiment.cc',
+      'browser/browser_hangs_experiment.h',
       'browser/browsing_data/autofill_counter.cc',
       'browser/browsing_data/autofill_counter.h',
       'browser/browsing_data/browsing_data_appcache_helper.cc',
       'browser/browsing_data/browsing_data_appcache_helper.h',
       'browser/browsing_data/browsing_data_cache_storage_helper.cc',
       'browser/browsing_data/browsing_data_cache_storage_helper.h',
       'browser/browsing_data/browsing_data_channel_id_helper.cc',
       'browser/browsing_data/browsing_data_channel_id_helper.h',
       'browser/browsing_data/browsing_data_cookie_helper.cc',
       'browser/browsing_data/browsing_data_cookie_helper.h',
@@ skipping 4129 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }