Remove the first-run search engine dialog/ballot.

chrome/browser/first_run/first_run_mac.mm

Index: chrome/browser/first_run/first_run_mac.mm
diff --git a/chrome/browser/first_run/first_run_mac.mm b/chrome/browser/first_run/first_run_mac.mm
index 3df3c345b4d9e481c694e7b464b598acc9207bc2..c1454886c1fca0ae2dc242ceff7b3ca7aeac6763 100644
--- a/chrome/browser/first_run/first_run_mac.mm
+++ b/chrome/browser/first_run/first_run_mac.mm
@@ -30,8 +30,6 @@ void AutoImport(
     bool homepage_defined,
     int import_items,
     int dont_import_items,
-    bool search_engine_experiment,
-    bool randomize_search_engine_experiment,
     bool make_chrome_default,
     ProcessSingleton* process_singleton) {
   // We need to avoid dispatching new tabs when we are importing because
@@ -53,8 +51,6 @@ void AutoImport(
                                      homepage_defined,
                                      import_items,
                                      dont_import_items,
-                                     search_engine_experiment,
-                                     randomize_search_engine_experiment,
                                      make_chrome_default);
 
   process_singleton->Unlock();