[SystemInfo API] Move Storage API out of experimental namespace and rename to the "system" namespace

chrome/chrome_tests.gypi

 # Copyright 2013 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' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1321 matching lines @@
         'browser/extensions/api/serial/serial_apitest.cc',
         'browser/extensions/api/session_restore/session_restore_apitest.cc',
         'browser/extensions/api/socket/socket_apitest.cc',
         'browser/extensions/api/storage/settings_apitest.cc',
         'browser/extensions/api/streams_private/streams_private_apitest.cc',
         'browser/extensions/api/sync_file_system/sync_file_system_apitest.cc',
         'browser/extensions/api/system_indicator/system_indicator_apitest.cc',
         'browser/extensions/api/system_cpu/system_cpu_apitest.cc',
         'browser/extensions/api/system_display/system_display_apitest.cc',
         'browser/extensions/api/system_memory/system_memory_apitest.cc',
-        'browser/extensions/api/system_info_storage/system_info_storage_apitest.cc',
         'browser/extensions/api/system_private/system_private_apitest.cc',
-        'browser/extensions/api/system_info_storage/system_info_storage_eject_apitest.cc',
+        'browser/extensions/api/system_storage/system_storage_apitest.cc',
+        'browser/extensions/api/system_storage/system_storage_eject_apitest.cc',
         'browser/extensions/api/tab_capture/tab_capture_apitest.cc',
         'browser/extensions/api/tabs/tabs_test.cc',
         'browser/extensions/api/terminal/terminal_private_apitest.cc',
         'browser/extensions/api/test/apitest_apitest.cc',
         'browser/extensions/api/top_sites/top_sites_apitest.cc',
         'browser/extensions/api/usb/usb_apitest.cc',
         'browser/extensions/api/usb/usb_manual_apitest.cc',
         'browser/extensions/api/web_navigation/web_navigation_apitest.cc',
         'browser/extensions/api/web_request/web_request_apitest.cc',
         'browser/extensions/api/web_socket_proxy_private/web_socket_proxy_private_apitest.cc',
@@ skipping 2037 matching lines @@
             'utility',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
           ],
         }]
     }],
   ],  # 'conditions'
 }