Merge "Ask remote transition handler to handle transiton in MixedHandler" into udc-qpr-dev am: fd01145682

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24798163

Change-Id: I67c728deb2bbbb26785c57c97fcaea37ade22ff1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>