Removed reference to deleted scheduler/util/thread_type.h

scheduler/util/thread_type.h was deleted in January but the
reference to it in BUILD.gn remained. Now that seems to make
the isolate step in trybots sad.

Bug: 776416
Change-Id: Iff685c54def879a8c5a53c9893f1c7eef4c9c13c
Reviewed-on: https://chromium-review.googlesource.com/c/1286851
Commit-Queue: Daniel Bratell <bratell@opera.com>
Commit-Queue: Alexander Timin <altimin@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600455}
1 file changed