Updating JSON Schema Compiler to add description field to schemas.

chrome/common/extensions/api/test.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": "test",
-    "nodoc": true,
-    "types": [],
+    "description": "none",
     "functions": [
       {
         "name": "getConfig",
         "type": "function",
         "description": "Gives configuration options set by the test.",
         "parameters": [
           {
             "type": "function", "name": "callback", "parameters": [
               {
                 "type": "object",
@@ skipping 288 matching lines @@
             "properties": {
               "data": { "type": "string", "description": "Additional information." },
               "lastMessage": { "type": "boolean", "description": "True if this was the last message for this test" }
             }
           }
         ]
       }
     ]
   }
 ]