Merge "Pull vma.usage.vss updates out of for-loop" am: c08c120d0e am: bb4c752c78 am: 3b36866ed5 am: 81b8cb6c6a

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/2032744

Change-Id: I6a08b3e91f5d51c99671f86dfe7e98e52e6eed3e