Merge "Set letterbox verticalPositionMultiplier to 0" into tm-qpr-dev am: dee5e5cf am: fc40c019

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19888927



Change-Id: I815cd1e91c6c3a0380f80de12b303e314cf66243
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>