Merge "Remove the suggestion to AsyncTask.SERIAL_EXECUTOR" am: 863a88ef07

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2185016

Change-Id: Ic35c9c2bff296f0f8419354e9a79ebcbb3fad57b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>