Allow API functions and events to have entries in _api_features.json

chrome/common/extensions/api/events.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.
 
 [
   {
     "namespace": "events",
     "compiler_options": {
       "implemented_in": "chrome/browser/extensions/api/declarative/declarative_api.h"
     },
+    "check_unprivileged": true,

[cduvall, 2013/05/03 02:14:02]

This is just necessary while these APIs have not been converted to features.
This is needed because bindings.js needs to check APIs that specify
"unprivileged" in the schema differently than the features APIs.

     "unprivileged": true,
     "types": [
       {
         "id": "Rule",
         "type": "object",
         "description": "Description of a declarative rule for handling events.",
         "properties": {
           "id": {
             "type": "string",
             "optional": true,
@@ skipping 287 matching lines @@
                 {"type": "array", "items": {"type": "integer"}, "description": "A pair of integers identiying the start and end (both inclusive) of a port range."}
               ]
             }
           }
         }
       }
     ]
   }
 ]