When set to true, this adds the files necessary to run memcheck as data dependencies, listed in the .gni files.
This will enable us to run memcheck on swarming.
R=kjellander@chromium.org
BUG=chromium:497757
NOTRY=True
Review-Url: https://codereview.webrtc.org/2510033004
Cr-Commit-Position: refs/heads/master@{#15219}