GitLab

Modifies CreateIncognitoFileSystemContextForTesting method

Bug: N/A
Change-Id: I28a86cb4edb35d312899ac438e283bd502fd1722
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2487723Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Commit-Queue: Austin Sullivan <asully@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819416}