GitLab

Currently, when developing lacros-chrome on a ChromeOS device, passing
new arguments requires rebuilding ash-chrome. With this CL, the new flag
--lacros-chrome-additional-args can be used to pass flags from
ash-chrome directly to lacros-chrome. This means that developers can
modify /etc/chrome_dev.conf to pass flags to lacros-chrome without
rebuilding ash-chrome.

Bug: 1107936
Change-Id: I81d1d51451dce0e256c8c5d5d8e94016b4defa79
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2316812
Commit-Queue: Erik Chen <erikchen@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Auto-Submit: Erik Chen <erikchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791378}