Switch to 1-parameter version of base::DeleteFile() in various dirs.

The 1-parameter version is simpler, and the 2-parameter version is
deprecated.

Bug: 1009837
Change-Id: I083906f5cb2f899814511707a639da591a711182
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2285177
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#786068}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 7b28548aa69b1bde674ce5b97c38328b052f8822
1 file changed