Merge "Add special label to denote dream in preview mode" into tm-qpr-dev am:...

Merge "Add special label to denote dream in preview mode" into tm-qpr-dev am: c2127139 am: 6d13ba1d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21355979



Change-Id: I51c1e67849719d80ab0c0757982b92a2a5d3549e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>