GitLab

Adding this switch to headless browser tests ensures that proxy related
tests are not affected by a platform specific system proxy configuration
service.

This fixes HeadlessProtocolCompositorBrowserTest.BrowserSetInitialProxyConfig
issues when running on Windows.

Bug: 1134929
Change-Id: Ib245a4fe660eacaab944521a56ed9f2d1f525b73
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2489779Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Peter Kvitek <kvitekp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819454}