Service Worker: Respect the "clear on exit" content setting

content/content_browser.gypi

 # Copyright (c) 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
@@ skipping 1161 matching lines @@
       'browser/service_worker/service_worker_context_core.h',
       'browser/service_worker/service_worker_context_observer.h',
       'browser/service_worker/service_worker_context_request_handler.cc',
       'browser/service_worker/service_worker_context_request_handler.h',
       'browser/service_worker/service_worker_context_wrapper.cc',
       'browser/service_worker/service_worker_context_wrapper.h',
       'browser/service_worker/service_worker_controllee_request_handler.cc',
       'browser/service_worker/service_worker_controllee_request_handler.h',
       'browser/service_worker/service_worker_database.cc',
       'browser/service_worker/service_worker_database.h',
+      'browser/service_worker/service_worker_database_task_manager.cc',
+      'browser/service_worker/service_worker_database_task_manager.h',
       'browser/service_worker/service_worker_disk_cache.cc',
       'browser/service_worker/service_worker_disk_cache.h',
       'browser/service_worker/service_worker_dispatcher_host.cc',
       'browser/service_worker/service_worker_dispatcher_host.h',
       'browser/service_worker/service_worker_fetch_dispatcher.cc',
       'browser/service_worker/service_worker_fetch_dispatcher.h',
       'browser/service_worker/service_worker_handle.cc',
       'browser/service_worker/service_worker_handle.h',
       'browser/service_worker/service_worker_info.cc',
       'browser/service_worker/service_worker_info.h',
@@ skipping 730 matching lines @@
       'sources': [
         'browser/media/cdm/browser_cdm_manager.cc',
         'browser/media/cdm/browser_cdm_manager.h',
         # This works on Android because enable_browser_cdms==1 on Android.
         'browser/media/media_web_contents_observer.cc',
         'browser/media/media_web_contents_observer.h',
       ],
     }],
   ],
 }