Merge "Add script to update prebuilt dex" am: 93976bcf78 am: 6cbe202a3d am: b1fbc94ff2

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

Change-Id: I3fde6ce1d169c5d4635abe4f80ee7c63337b4a79