Updating JSON Schema Compiler to add description field to schemas.

chrome/common/extensions/api/webstore_private.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":"webstorePrivate",
-    "nodoc": "true",
+    "description": "none",
     "functions": [
       {
         "name": "install",
         "nocompile": true,
         "description": "Installs the extension corresponding to the given id",
         "parameters": [
           {
             "name": "expected_id",
             "type": "string",
             "description": "The id of the extension to install."
@@ skipping 216 matching lines @@
             "optional": "false",
             "parameters": [
               { "name": "is_enabled", "type": "boolean" }
             ]
           }
         ]
       }
     ]
   }
 ]