Add an experimental permissions API for extensions.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 984 matching lines @@
         'browser/extensions/extension_metrics_module.cc',
         'browser/extensions/extension_metrics_module.h',
         'browser/extensions/extension_module.cc',
         'browser/extensions/extension_module.h',
         'browser/extensions/extension_omnibox_api.cc',
         'browser/extensions/extension_omnibox_api.h',
         'browser/extensions/extension_page_actions_module.cc',
         'browser/extensions/extension_page_actions_module.h',
         'browser/extensions/extension_page_actions_module_constants.cc',
         'browser/extensions/extension_page_actions_module_constants.h',
+        'browser/extensions/extension_permissions_api.cc',
+        'browser/extensions/extension_permissions_api.h',
+        'browser/extensions/extension_permissions_api_constants.cc',
+        'browser/extensions/extension_permissions_api_constants.h',
         'browser/extensions/extension_preference_api.cc',
         'browser/extensions/extension_preference_api.h',
         'browser/extensions/extension_preference_api_constants.cc',
         'browser/extensions/extension_preference_api_constants.h',
         'browser/extensions/extension_preference_helpers.cc',
         'browser/extensions/extension_preference_helpers.h',
         'browser/extensions/extension_prefs.cc',
         'browser/extensions/extension_prefs.h',
         'browser/extensions/extension_prefs_scope.h',
         'browser/extensions/extension_pref_store.cc',
@@ skipping 3842 matching lines @@
       ],
       'export_dependent_settings': [
         'in_memory_url_index_cache_proto',
       ],
       # This target exports a hard dependency because it includes generated
       # header files.
       'hard_dependency': 1,
     },
   ],
 }