Move permissions manifest key to //extensions

chrome/common/extensions/api/_manifest_features.json

 // 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.
 
 // This features file defines manifest keys implemented under src/chrome.
 // See chrome/common/extensions/api/_features.md to understand this file, as
 // well as feature.h, simple_feature.h, and base_feature_provider.h.
 
 {
   "about_page": {
@@ skipping 173 matching lines @@
   "options_page": {
     "channel": "stable",
     "extension_types": [
       "extension", "legacy_packaged_app", "hosted_app"
     ]
   },
   "page_action": {
     "channel": "stable",
     "extension_types": ["extension"]
   },
-  "permissions": {
-    "channel": "stable",
-    "extension_types": [
-      "extension", "legacy_packaged_app", "hosted_app", "platform_app"
-    ]
-  },
   "platforms": {
     "channel": "stable",
     "extension_types": "all"
   },
   "plugins": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app", "hosted_app"]
   },
   "requirements": {
     "channel": "stable",
@@ skipping 47 matching lines @@
   },
   "update_url": {
     "channel": "stable",
     "extension_types": "all"
   },
   "url_handlers": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   }
 }