Add frameId to contextMenus.onClicked / onclick.

chrome/common/extensions/api/context_menus_internal.json

 // Copyright 2014 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": "contextMenusInternal",
     "description": "Use the <code>chrome.contextMenus</code> API to add items to Google Chrome's context menu. You can choose what types of objects your context menu additions apply to, such as images, hyperlinks, and pages.",
     "types": [
       {
@@ skipping 34 matching lines @@
           "pageUrl": {
             "type": "string",
             "optional": true,
             "description": "The URL of the page where the menu item was clicked. This property is not set if the click occured in a context where there is no current page, such as in a launcher context menu."
           },
           "frameUrl": {
             "type": "string",
             "optional": true,
             "description": " The URL of the frame of the element where the context menu was clicked, if it was in a frame."
           },
+          "frameId": {
+            "type": "integer",
+            "optional": true,
+            "description": " The <a href='webNavigation#frame_ids'>ID of the frame</a> of the element where the context menu was clicked, if it was in a frame."
+          },
           "selectionText": {
             "type": "string",
             "optional": true,
             "description": "The text for the context selection, if any."
           },
           "editable": {
             "type": "boolean",
             "description": "A flag indicating whether the element is editable (text input, textarea, etc.)."
           },
           "wasChecked": {
@@ skipping 24 matching lines @@
             "name": "tab",
             "$ref": "tabs.Tab",
             "description": "The details of the tab where the click took place. If the click did not take place in a tab, this parameter will be missing.",
             "optional": true
           }
         ]
       }
     ]
   }
 ]