Remove usage of ScopedTaskScheduler.
This CL removes usage of ScopedTaskScheduler in tests where that
doesn't require too much refactoring. ScopedTaskScheduler has been
deprecated in favor of ScopedTaskEnvironment.
BUG=708584
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_site_isolation;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=sky@chromium.org, alokp@chromium.org, stevenjb@chromium.org,
hajimehoshi@chromium.org, jam@chromium.org, scheib@chromium.org, chcunningham@chromium.org
Review-Url: https://codereview.chromium.org/2840593002
Cr-Commit-Position: refs/heads/master@{#470003}
13 files changed
