GitLab

Allow individual Cast web applications to set command-line switches
for the render process.

Bug: internal b/67735190
Bug: internal b/77323820
Test: cast_shell_browsertests, cast_shell_unittests
Change-Id: I2fdeca54e9f4a46f6299c58482e9934ebffe8b69
Reviewed-on: https://chromium-review.googlesource.com/1018205
Commit-Queue: James West <jameswest@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558077}