Take notification API out of experimental.

chrome/common/extensions/api/api.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'api',
       'type': 'static_library',
       'sources': [
         '<@(schema_files)',
       ],
       # TODO(jschuh): http://crbug.com/167187 size_t -> int
       'msvs_disabled_warnings': [ 4267 ],
       'includes': [
         '../../../../build/json_schema_bundle_compile.gypi',
         '../../../../build/json_schema_compile.gypi',
       ],
       'variables': {
         'chromium_code': 1,
         'schema_files': [
           'alarms.idl',
           'app_current_window_internal.idl',
           'app_runtime.idl',
           'app_window.idl',
           'autotest_private.idl',
           'bluetooth.idl',
+          'bookmark_manager_private.json',
           'bookmarks.json',
-          'bookmark_manager_private.json',
           'chromeos_info_private.json',
           'cloud_print_private.json',
           'content_settings.json',
           'context_menus.json',
           'cookies.json',
           'debugger.json',
           'developer_private.idl',
           'dial.idl',
           'downloads.idl',
           'echo_private.json',
           'downloads_internal.idl',
           'events.json',
           'experimental_accessibility.json',
           'experimental_app.json',
           'experimental_discovery.idl',
           'experimental_dns.idl',
           'experimental_history.json',
           'experimental_identity.idl',
           'experimental_idltest.idl',
           'experimental_infobars.json',
           'experimental_media_galleries.idl',
-          'experimental_notification.idl',
           'experimental_power.json',
           'experimental_record.json',
           'experimental_system_info_cpu.idl',
           'experimental_system_info_memory.idl',
           'experimental_system_info_storage.idl',
           'extension.json',
           'file_browser_handler_internal.json',
           'file_system.idl',
           'font_settings.json',
           'history.json',
           'i18n.json',
           'idle.json',
           'managed_mode_private.json',
           'management.json',
           'media_galleries.idl',
           'media_galleries_private.idl',
           'media_player_private.json',
           'metrics_private.json',
+          'networking_private.json',
+          'notifications.idl',
           'omnibox.json',
-          'networking_private.json',
           'page_capture.json',
           'page_launcher.idl',
           'permissions.json',
           'push_messaging.idl',
           'rtc_private.idl',
           'serial.idl',
           'session_restore.json',
           'socket.idl',
           'storage.json',
           'sync_file_system.idl',
           'system_indicator.idl',
           'system_info_display.idl',
           'system_private.json',
           'tab_capture.idl',
           'tabs.json',
           'terminal_private.json',
           'test.json',
           'top_sites.json',
           'usb.idl',
           'wallpaper_private.json',
-          'webview.json',
           'web_navigation.json',
           'web_request.json',
           'web_socket_proxy_private.json',
+          'webview.json',
           'windows.json',
         ],
         'cc_dir': 'chrome/common/extensions/api',
         'root_namespace': 'extensions::api',
       },
       'dependencies': [
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/sync/sync.gyp:sync',
       ],
       'conditions': [
         ['OS=="android"', {
           'schema_files!': [
             'usb.idl',
           ],
         }],
         ['OS!="chromeos"', {
           'schema_files!': [
             'file_browser_handler_internal.json',
             'rtc_private.idl',
           ],
         }],
       ],
     },
   ],
 }