Change infobar creation to use a public static Create() method on the infobar delegate classes.

chrome/browser/autofill/autofill_cc_infobar_delegate.h

Index: chrome/browser/autofill/autofill_cc_infobar_delegate.h
===================================================================
--- chrome/browser/autofill/autofill_cc_infobar_delegate.h	(revision 175396)
+++ chrome/browser/autofill/autofill_cc_infobar_delegate.h	(working copy)
@@ -24,12 +24,27 @@
 // card information gathered from a form submission.
 class AutofillCCInfoBarDelegate : public ConfirmInfoBarDelegate {
  public:
+  // Creates an autofill credit card delegate and adds it to |infobar_service|.
+  static void Create(InfoBarService* infobar_service,
+                     const CreditCard* credit_card,
+                     PersonalDataManager* personal_data,
+                     const AutofillMetrics* metric_logger);
+
+#if defined(UNIT_TEST)
+  static scoped_ptr<ConfirmInfoBarDelegate> Create(
+      const CreditCard* credit_card,
+      PersonalDataManager* personal_data,
+      const AutofillMetrics* metric_logger) {
+    return scoped_ptr<ConfirmInfoBarDelegate>(new AutofillCCInfoBarDelegate(
+        NULL, credit_card, personal_data, metric_logger));
+  }
+#endif
+
+ private:
   AutofillCCInfoBarDelegate(InfoBarService* infobar_service,
                             const CreditCard* credit_card,
                             PersonalDataManager* personal_data,
                             const AutofillMetrics* metric_logger);
-
- private:
   virtual ~AutofillCCInfoBarDelegate();
 
   void LogUserAction(AutofillMetrics::InfoBarMetric user_action);