tree a8ce97ccaafbfa01c0475c0e2b47ba9d0308cf8d
parent 98c328b0577d0678d80f3e6ea832b45151331230
author Gianfranco Valentino <gevalentino@google.com> 1543886401 -0800
committer Gianfranco Valentino <gevalentino@google.com> 1544835553 +0000

[blobfs][vnode] Add instrumentation.

Instruments Blobfs vnodes paths, but does not yet flush to cobalt.
This will be done once the project data is updated on cobalt side.

TEST=blobfs-integration-tests, locally verified metrics are incremented
when on.

Change-Id: Ic1ed3c9dce649192a56c99dc10a22d8b797a867e