Worker: Fix comments about threading in dedicated_worker.h

Bug: n/a
Change-Id: Ib745a66716dcdefd95600f64923f338bd5eaa56c
Reviewed-on: https://chromium-review.googlesource.com/c/1460207
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Auto-Submit: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630246}
1 file changed