Upgrade emulator to emu-master-dev build 7290171 am: 868d887cfd am: 2255653df7 am: 6b297a7eb3

Original change: https://android-review.googlesource.com/c/platform/prebuilts/android-emulator/+/1678607

Change-Id: I7b992693c79d0cb8ae6998c8c23d752052e6d434