FileBrowser: Hide DriveApps on Open-with menu when the selected file is not on drive.

chrome/common/extensions/api/file_browser_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":"fileBrowserPrivate",
     "nodoc": "true",
     "types": [
       {
         "id": "FileBrowserTask",
         "type": "object",
         "description": "Represents information about available browser tasks. A task is an abstraction of an operation that the file browser can perform over a selected file set.",
         "properties": {
           "taskId": {"type": "string", "description": "The unique identifier of the task."},
           "title": {"type": "string", "description": "Task title."},
           "iconUrl": {"type": "string", "description": "Task icon url (from chrome://extension-icon/...)"},
+          "driveApp": {"type": "boolean", "description": "True if this is Drive App."},
           "patterns": {
             "type": "array",
             "items": { "type": "string" },
             "description": "The list of URL patterns supported by the task that matched at least one file."
           }
         }
       },
       {
         "id": "VolumeInfo",
         "type": "object",
@@ skipping 1033 matching lines @@
       },
       {
         "name": "onNetworkConnectionChanged",
         "type": "function",
         "description": "Fired when the active network connection state changes. The network connection state can be retrieved via 'getNetworkConnectionState'.",
         "parameters": []
       }
     ]
   }
 ]