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This reverts commit 775612b8.

Reason for revert: caused all Windows debug bots to fail almost all tests. Only one example:
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win7%20Tests%20%28dbg%29%281%29/70380

Original change's description:
> [scheduler] Add task type and queue type to tracing.
> 
> R=​skyostil@chromium.org
> 
> Change-Id: Id0aea377558e876c8178e82eb3a170f678c415cc
> Reviewed-on: https://chromium-review.googlesource.com/1140717
> Commit-Queue: Alexander Timin <altimin@chromium.org>
> Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#576201}

TBR=skyostil@chromium.org,altimin@chromium.org

Change-Id: I56291cf103d5626c963c2661c4cdca7c29d74476
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/1142173Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576279}