memory-infra: Add peak-detector skeleton.

Adds a skeleton and tests for the MemoryPeakDetector.
This CL does not yet take over the old peak detector in
MemoryDumpScheduler, which will happen in the next CLs.

BUG=607533
TBR=thakis@chromium.org

Review-Url: https://codereview.chromium.org/2786373002
Cr-Original-Commit-Position: refs/heads/master@{#461678}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f34c3e056c9a2eaa12a41daa2f8e05b579360f28
1 file changed
tree: 7ebae5dee82b1b7c1025faa11ba726f7e15ccd4a
  1. tools/