Merge "Refactor DragDetector and fix a few resizing bugs" into tm-qpr-dev am: 7160f840

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21048355



Change-Id: I2af6f9b9a5d452e761259f7c4f364ef000f4a695
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>