Merge "Update code comments to mention sensor name uniqueness." into sc-dev...

Merge "Update code comments to mention sensor name uniqueness." into sc-dev am: 5f9e20b3 am: be55a14c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14987633

Change-Id: Id7a0a9f8d946464a50343286f0579105808d5ab4