Harmony - convert hung renderer dialog.

chrome/browser/ui/test/browser_dialog_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/process/launch.h"
 #include "base/test/launcher/test_launcher.h"
 #include "base/test/test_switches.h"
 #include "base/test/test_timeouts.h"
 #include "chrome/browser/ui/test/test_browser_dialog.h"
@@ skipping 48 matching lines @@
 
   base::LaunchOptions options;
 
   // Disable timeouts and generate screen output if --interactive was specified.
   if (command.HasSwitch(internal::kInteractiveSwitch)) {
     command.AppendSwitchASCII(switches::kUiTestActionMaxTimeout,
                               TestTimeouts::kNoTimeoutSwitchValue);
     command.AppendSwitchASCII(switches::kTestLauncherTimeout,
                               TestTimeouts::kNoTimeoutSwitchValue);
     command.AppendSwitch(switches::kEnablePixelOutputInTests);
+#if defined(OS_WIN)
+    // Required to allow the new process to spawn.
+    options.wait = true;
+#endif
   } else {
     options.wait = true;
   }
 
   base::LaunchProcess(command, options);
 }