GitLab

Fuchsia: stub out missing ProcessMetrics methods.
The absence of Fuchsia stubs for these methods produced linker errors
when compiling the headless shell.

R: scottmg@chromium.org
Bug: 750948
Change-Id: If9e13e80e17852fe7692164b2cd0c728bdded9f3
Reviewed-on: https://chromium-review.googlesource.com/596624
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491799}