Rename METADATA.android file to just METADATA am: f35b3ed30c

Original change: https://android-review.googlesource.com/c/platform/external/libchrome-gestures/+/2855735

Change-Id: I9f9a9902e2290ccdf4fd3c278d2f5f8b0e4dd38b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>