Merge "docs: Note that antialiasing is not supported on multiple Canvas draw ops" into tm-dev am: 3b5f7cb4ba am: 7b351a48d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20376185

Change-Id: If89172b1bdc4d6e75f0eaac3c3467924b8c8a6bc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>