Import extension SDK JAR files am: 0a17ff722a am: 9c94aa5812

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/sdk/+/18816336

Change-Id: I2aaef1f2dd8c94542c560fdac87b1b5333b3f82f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>