commit 8ed45166343233d13a8f3517a0b8b33d9907248f
author ssid <ssid@chromium.org> Sat Jun 04 08:13:26 2016
committer Commit bot <commit-bot@chromium.org> Sat Jun 04 08:14:54 2016
tree c477ca5ffee4760ab8beb8476ea34a1f6af56bee
parent a8c9261aa653751d108271b8c15938d78783c692

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}