Merge "Introduce launchable versions of common view types." into tm-qpr-dev am: 8ca28c4e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21150245



Change-Id: I23b0a77aa6ad256360e0bca7e2eb8556fff0abb5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>