Replace --run-layout-test with --run-web-tests in LayoutTests/.

Bug: 843412
Change-Id: Ib6d25a9eaca5a7a6153bb1be2ddf48e3bb4538a9
Reviewed-on: https://chromium-review.googlesource.com/1063430
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#559465}
21 files changed