Refactor browse UI in preparation for wide screen support am: 35a526cb6b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Car/libs/+/13536110

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9e255f51b39a16e7b4d9869f51cbe60ea012dfc8