Merge "Map META+T shortcut to toggling task bar" into udc-dev am: 3a4a25f6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21537141



Change-Id: I659b4d00856b40bf60f2b89b3e4b02d24cfd725c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>