This required disabling the popup dialog which waits for a debugger to
be attached. This is achieved by setting an environment variable:
SWIFTSHADER_DISABLE_DEBUGGER_WAIT_DIALOG=1

Bug b/123360006

Change-Id: Ic1269fdae3088b08a85322cbc7e33a3bdd8292cb
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/27548
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Reviewed-by: Alexis Hétu <sugoi@google.com>