DNR Prototype: With flatbuffers

extensions/common/api/_manifest_features.json

 // Copyright 2014 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/extensions.
 // See chrome/common/extensions/api/_features.md to understand this file, as
 // well as feature.h, simple_feature.h, and feature_provider.h.
 
 {
   "action_handlers": {
@@ skipping 109 matching lines @@
     "channel": "stable",
     // Platform apps have a restricted content security policy that cannot be
     // overriden (except for a whitelist of exceptions, see the
     // app.content_security_policy whitelist).
     "extension_types": ["extension", "legacy_packaged_app"]
   },
   "current_locale": {
     "channel": "stable",
     "extension_types": "all"
   },
+  "declarative_net_request_rules" : {
+    // TODO can manifest features have dependencies, can't see an example.
+    "dependencies": ["permission:declarativeNetRequest"],
+    "extension_types": ["extension", "legacy_packaged_app"]
+  },
   "default_locale": {
     "channel": "stable",
     "extension_types": "all"
   },
   "description": {
     "channel": "stable",
     "extension_types": "all"
   },
   "externally_connectable": {
     "channel": "stable",
@@ skipping 191 matching lines @@
       "extension_types": ["platform_app"],
       "location": "component"
     }
   ],
   "webview": {
     "channel": "stable",
     "extension_types": ["platform_app"],
     "min_manifest_version": 2
   }
 }