Updating JSON Schema Compiler to add description field to schemas.

chrome/common/extensions/api/media_player_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": "mediaPlayerPrivate",
-    "nodoc": "true",
     "compiler_options": {
       "implemented_in": "chrome/browser/chromeos/extensions/media_player_api.h"
     },
+    "description": "none",
     "platforms": ["chromeos"],
     "types": [
       {
         "id": "Playlist",
         "type": "object",
         "description": "Mediaplayer playlist stored in the browser (it exists even if the mediaplayer is closed).",
         "properties": {
           "items": {
             "name": "items",
             "type": "array",
@@ skipping 82 matching lines @@
       },
       {
         "name": "onTogglePlayState",
         "type": "function",
         "description": "Notifies that a play/pause toggle was requested.",
         "parameters": []
       }
     ]
   }
 ]