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

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

Change-Id: Icc1c705219f8bed11bf2c8453b06bbbd894e6e41