Merge "Move the mainline SDK definition to system/libartpalette." am: c0f0e221d2 am: 2009042ae2 am: a58b8ee784 am: bd8b068e34

Original change: https://android-review.googlesource.com/c/platform/prebuilts/sdk/+/1382578

Change-Id: I01d70a7aec42e64f9925f9e06e30122df39e33d4