Merge "Add ClipDescription method to determine if the clip is styled text." into sc-dev am: 0e588cc3 am: 9534e09e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13496225

Change-Id: Ic10a73eeadf9fd30072b28ccd003ca3918abe56a