[Extensions] Convert APIs to use movable types [4]

chrome/common/extensions/api/desktop_capture.json

 // Copyright 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": "desktopCapture",
     "description": "Desktop Capture API that can be used to capture content of screen, individual windows or tabs.",
+    "compiler_options": {"use_movable_types": true},
     "types": [
       {
         "id": "DesktopCaptureSourceType",
         "type": "string",
         "enum": ["screen", "window", "tab", "audio"],
         "description": "Enum used to define set of desktop media sources used in chooseDesktopMedia()."
       }
     ],
     "functions": [
       {
@@ skipping 38 matching lines @@
           {
             "name": "desktopMediaRequestId",
             "type": "integer",
             "description": "Id returned by chooseDesktopMedia()"
           }
         ]
       }
     ]
   }
 ]