Merge "Extract unfold classes to a separate library" into tm-qpr-dev am: 3676e7af

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18321388



Change-Id: Icc47b5ba91090d398aafd389f7586132b592fccd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>