Add command line prefix flags.

This adds --peer-cmd-prefix=PREFIX and --xwayland-cmd-prefix=PREFIX
flags that can be used to better control how child processes are
spawned.

Useful values might be "valgrind" or "xterm -e gdb --args".

Bug: 826923
Change-Id: If9852a4e58f55f0b5185cb73d254591242243352
Reviewed-on: https://chromium-review.googlesource.com/997976
Tested-by: David Reveman <reveman@chromium.org>
Reviewed-by: David Reveman <reveman@chromium.org>
1 file changed