[ChromeDriver] Disable /dev/shm usage when needed

Automatically add --disable-dev-shm-usage switch to ChromeDriver command
line on Linux when /dev/shm is not accessible.

Bug: chromedriver:2782, b/124440075
Change-Id: I7322094d7da4e6b1a02fa3092b50ba4dbbc6fa7b
Reviewed-on: https://chromium-review.googlesource.com/c/1478187
Reviewed-by: Caleb Rouleau <crouleau@chromium.org>
Commit-Queue: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633558}
1 file changed