[Memory metrics] Update memory metrics and migrate the memory metrics
from fuchsia_system_metrics over.

Corresponding memory monitor CL:
https://fuchsia-review.googlesource.com/c/fuchsia/+/334594

Bug: 22989

Change-Id: Ie9ecf573947a9ff827687c7643ea5032fc378db0
1 file changed
tree: c032c2cc1fb673b98ac5869ce74e1698ec993d63
  1. .gitignore
  2. BUILD.gn
  3. OWNERS
  4. check.py
  5. cobalt_internal/
  6. fuchsia/
  7. projects.yaml