Merge "Add script to update prebuilt dex" am: 93976bcf78 am: 6cbe202a3d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1360500

Change-Id: Ibbfc40ef6450a7c481ab40f8a9c8c3f03e738862