Merge "Add a threshold to the trigger fold animation" into tm-qpr-dev am: e448b1a4c1 am: d793449b14

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21520166

Change-Id: I1c85effcacedc6e9e25c48a139ec5645a03fc2ac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>