libmemtrack: Use memtrack proxy service

libmemtrack no longer talks directly to memtrack HAL.
All requests for memtrack data goes through the memtrack
proxy service to allow access controls check on the calling
context's UID/PID.

Bug: 177664629
Test: adb shell dumpsys meminfo
Change-Id: I37950a1ffc0a7a0ab1fae3a0c0132bf29561543f
1 file changed
tree: 2812155ed23ea13706cac83e2f1290b75391bfc3
  1. Android.bp
  3. include/
  4. memtrack.cpp
  5. memtrack_test.cpp