[chromedriver] Introduce chromeOptions.useAutomationExtension.

chrome/test/chromedriver/chrome_launcher.cc

Index: chrome/test/chromedriver/chrome_launcher.cc
diff --git a/chrome/test/chromedriver/chrome_launcher.cc b/chrome/test/chromedriver/chrome_launcher.cc
index 1592c2913c813c10936865934ba31f80edf66884..d49a3011dbb638bce7cb90e97927f3690096eacb 100644
--- a/chrome/test/chromedriver/chrome_launcher.cc
+++ b/chrome/test/chromedriver/chrome_launcher.cc
@@ -162,9 +162,9 @@ Status PrepareCommandLine(uint16_t port,
     return Status(kUnknownError,
                   "cannot create temp dir for unpacking extensions");
   }
-  status = internal::ProcessExtensions(capabilities.extensions,
-                                       extension_dir->GetPath(), true,
-                                       &switches, extension_bg_pages);
+  status = internal::ProcessExtensions(
+      capabilities.extensions, extension_dir->GetPath(),
+      capabilities.use_automation_extension, &switches, extension_bg_pages);
   if (status.IsError())
     return status;
   switches.AppendToCommandLine(&command);