Fix SetUpCommandLine in GlobalConfirmInfoBarTest

Changed SetUpDefaultCommandLine to SetUpCommandLine in order to not
override the base implementation.

Hopefully resolves the timeouts seen in this test on some builders.

Bug: 764079
Change-Id: Ibe596ddabad3f58e9f66c5879db048d353f1a2e2
Reviewed-on: https://chromium-review.googlesource.com/723668Reviewed-by: Pavel Feldman <pfeldman@chromium.org>
Commit-Queue: Patrick Monette <pmonette@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510194}

chrome/browser/devtools/global_confirm_info_bar_browsertest.cc

@@ -63,7 +63,7 @@ class GlobalConfirmInfoBarWithInfoBarDisabledTest
   ~GlobalConfirmInfoBarWithInfoBarDisabledTest() override = default;
 
  protected:
-  void SetUpDefaultCommandLine(base::CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(infobars::switches::kDisableInfoBars);
   }