Merge "Use RepeatableExecutor to poll playback position" into rvc-dev am: ed336611 am: 8727f46f am: 5f045790 am: 35367df9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11663599

Change-Id: I02acbe847a63c027c498ef7512664b325e4747be