Ignore switches following "--" when parsing a command line.

BUG=933004
R=wfh@chromium.org

Change-Id: I911be4cbfc38a4d41dec85d85f7fe0f50ddca392
Reviewed-on: https://chromium-review.googlesource.com/c/1481210
Auto-Submit: Greg Thompson <grt@chromium.org>
Commit-Queue: Julian Pastarmov <pastarmovj@chromium.org>
Reviewed-by: Julian Pastarmov <pastarmovj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634604}
std::wstring GetChromeChannelName() {
  return InstallDetails::Get().channel();
}

std::wstring GetChromeChannelName() {
  return InstallDetails::Get().channel();
}
