Merge "[Media TTT] Don't show scrubbing times if we don't have the prev or...

Merge "[Media TTT] Don't show scrubbing times if we don't have the prev or next button." into tm-dev am: 7af8cbc4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17638186



Change-Id: I37d8bcd35cbf95b7948cfa6c244945439530d5f0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>