This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (e.g. depot_tools) into downstream projects
(e.g. tools/build).

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug
(or complain)

recipe_engine:
  https://crrev.com/339eace18cba35868b8bbb039100448fbfc58d15 Revert of Track step nesting in StreamEngine. (patchset #5 id:80001 of https://codereview.chromium.org/2245113002/ ) (dnj@chromium.org)

TBR=martiniss@chromium.org,phajdan.jr@chromium.org
BUG=chromium:628770

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Review-Url: https://codereview.chromium.org/2328713002