Updating JSON Schema Compiler to add description field to schemas.

chrome/common/extensions/api/experimental_accessibility.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": "experimental.accessibility",
     "compiler_options": {
       "implemented_in": "chrome/browser/accessibility/accessibility_extension_api.h"
     },
-    "nodoc": true,
+    "description": "none",
     "types": [
       {
         "id": "CheckboxDetails",
         "type": "object",
         "description": "Information about the state of a checkbox.",
         "properties": {
           "isChecked": {"type": "boolean", "description": "True if this checkbox is checked."}
         }
       },
       {
@@ skipping 268 matching lines @@
           {
             "$ref": "AccessibilityObject",
             "name": "menu",
             "description": "Information about the menu that was closed."
           }
         ]
       }
     ]
   }
 ]