Browser side support (sans UI) for desktop notifications....

chrome/chrome.gyp

 # Copyright (c) 2009 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,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
@@ skipping 1706 matching lines @@
         'browser/net/url_request_mock_link_doctor_job.cc',
         'browser/net/url_request_mock_link_doctor_job.h',
         'browser/net/url_request_mock_util.cc',
         'browser/net/url_request_mock_util.h',
         'browser/net/url_request_slow_download_job.cc',
         'browser/net/url_request_slow_download_job.h',
         'browser/net/url_request_slow_http_job.cc',
         'browser/net/url_request_slow_http_job.h',
         'browser/net/url_request_tracking.cc',
         'browser/net/url_request_tracking.h',
+        'browser/notifications/balloons.h',
+        'browser/notifications/desktop_notification_service.cc',
+        'browser/notifications/desktop_notification_service.h',
+        'browser/notifications/desktop_notification_service_linux.cc',
+        'browser/notifications/desktop_notification_service_mac.mm',
+        'browser/notifications/desktop_notification_service_win.cc',
+        'browser/notifications/notification.h',
+        'browser/notifications/notification_object_proxy.cc',
+        'browser/notifications/notification_object_proxy.h',
+        'browser/notifications/notifications_prefs_cache.cc',
+        'browser/notifications/notifications_prefs_cache.h',
         'browser/ntp_background_util.cc',
         'browser/ntp_background_util.h',
         'browser/omnibox_search_hint.cc',
         'browser/omnibox_search_hint.h',
         'browser/options_page_base.cc',
         'browser/options_page_base.h',
         'browser/options_util.cc',
         'browser/options_util.h',
         'browser/options_window.h',
         'browser/page_info_model.cc',
@@ skipping 5159 matching lines @@
       ],  # targets when chrome_personalization==1
     }],
   ],  # 'conditions'
 }
 
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 # indent-tabs-mode:nil
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