Set up background memory light tracing field trials
This CL introduces a BENCHMARK_MEMORY_LIGHT mode for background field
trials to enable memory-infra category in BACKGROUND mode. The
background tracing controller disables the periodic memory dumps and
takes a single memory snapshot when a light preset is passed.
Since the BACKGROUND mode in memory-infra is restricted only to
whitelisted dump providers (currently empty), this tracing mode causes
very low overhead (currently none) on the user experience.
BUG=613198
Review-Url: https://codereview.chromium.org/2034553002
Cr-Commit-Position: refs/heads/master@{#397910}
CrOS-Libchrome-Original-Commit: 8ed45166343233d13a8f3517a0b8b33d9907248f
2 files changed