Updating JSON Schema Compiler to add description field to schemas.

chrome/common/extensions/api/webview.json

 // Copyright (c) 2013 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": "webview",
-    "nodoc": true,
+    "description": "none",
     "functions": [
       {
         "name": "executeScript",
         "type": "function",
         "description": "Injects JavaScript code into a <webview> page.",
         "parameters": [
           {
             "type": "integer",
             "name": "instanceId",
             "description": "The instance ID of the guest <webview> process."
@@ skipping 49 matching lines @@
                 "description": "The result of the script in every injected frame."
               }
             ]
           }
         ]
       }
     ]
   }
 ]