Fix Mac build after 27aeb2c9

Oh yeah, that other platform.

R=mark@chromium.org
BUG=crashpad:100

Change-Id: Iaacd9a2a4a9754a26af9dd78f5b12cb1523ea19b
Reviewed-on: https://chromium-review.googlesource.com/386785
Reviewed-by: Mark Mentovai <mark@chromium.org>

tools/mac/run_with_crashpad.cc

@@ -164,6 +164,7 @@ int RunWithCrashpadMain(int argc, char* argv[]) {
   CrashpadClient crashpad_client;
   if (!crashpad_client.StartHandler(base::FilePath(options.handler),
                                     base::FilePath(options.database),
+                                    base::FilePath(),
                                     options.url,
                                     options.annotations,
                                     options.arguments,