Merge "docs: Note that antialiasing is not supported on multiple Canvas draw ops" into tm-dev am: 3b5f7cb4ba am: 7b351a48d8 am: 6f9c9792a4

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

Change-Id: I148060de7166574a6e817b38b1d37d0e34a3593f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>