Migrate web_ui_url_loader_factory.cc to TaskScheduler.

R=groby@chromium.org

Bug: 689520
Change-Id: Ia9fd5c98ec4c75ab2bc77e755371779dd3ea31f7
Reviewed-on: https://chromium-review.googlesource.com/610473
Reviewed-by: Rachel Blum <groby@chromium.org>
Commit-Queue: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493477}
1 file changed