libmemtrack: Use memtrack proxy service am: c3b9ef06d0 am: a8e3a630a2 am: 868c0c07cc

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmemtrack/+/1656471

Change-Id: Ic949e4adfbbbb7e2db63cba1465675c563132188
tree: 2812155ed23ea13706cac83e2f1290b75391bfc3
  1. include/
  2. Android.bp
  3. memtrack.cpp
  4. memtrack_test.cpp
  5. OWNERS