Added event to networkingPrivate extension that portal detection is completed.

chrome/common/extensions/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"
@@ skipping 395 matching lines @@
             ],
             "description": "A callback function that receives a string with the current TDLS status which can be 'Connected', 'Disabled', 'Disconnected', 'Nonexistent', or 'Unknown'"
           }
         ]
       },
       {
         "name": "getCaptivePortalStatus",
         "description": "Returns captive portal status for the network with networkGuid.",
         "parameters": [
           {
-            "name": "networkGuid",
+            "name": "networkPath",
             "type": "string",
-            "description": "The unique identifier of the network to get captive portal status."
+            "description": "The path of the network to get captive portal status."
           },
           {
             "name": "callback",
             "type": "function",
             "parameters": [
               {
                 "name": "status",
                 "$ref": "CaptivePortalStatus",
                 "description": "Results of the query for network captive portal status."
               }
@@ skipping 19 matching lines @@
         "name": "onNetworkListChanged",
         "type": "function",
         "description": "Fired when the list of networks has changed.  Sends a complete list of identifiers for all the current networks.",
         "parameters": [
           {
             "name": "changes",
             "type": "array",
             "items": { "type": "string" }
           }
         ]
+      },
+      {
+        "name": "onPortalDetectionCompleted",
+        "type": "function",
+        "description": "Fired when a portal detection for a network completes. Sends a name of the network and corresponding captive portal status.",
+        "parameters": [
+          {
+            "name": "networkPath",
+            "type": "string"
+          },
+          {
+            "name": "status",
+            "$ref": "CaptivePortalStatus"
+          }
+        ]
       }
     ]
   }
 ]