Move networking_private to src/extensions

extensions/common/api/networking_private.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":"networkingPrivate",
     "description": "none",
     "compiler_options": {
-      "implemented_in": "chrome/browser/extensions/api/networking_private/networking_private_api.h"
+      "implemented_in": "extensions/browser/api/networking_private/networking_private_api.h"
     },
     "platforms": ["chromeos", "win", "mac", "linux"],
     "types" : [
       {
         "id": "NetworkProperties",
         "type": "object",
         "additionalProperties": { "type": "any" }
       },
       {
         "id": "ManagedNetworkProperties",
@@ skipping 495 matching lines @@
           },
           {
             "name": "status",
             "$ref": "CaptivePortalStatus"
           }
         ]
       }
     ]
   }
 ]