Minor cleanup to how infobars handle expiry:

chrome/browser/autofill/autofill_cc_infobar_delegate.cc

Index: chrome/browser/autofill/autofill_cc_infobar_delegate.cc
===================================================================
--- chrome/browser/autofill/autofill_cc_infobar_delegate.cc	(revision 174909)
+++ chrome/browser/autofill/autofill_cc_infobar_delegate.cc	(working copy)
@@ -43,14 +43,6 @@
   had_user_interaction_ = true;
 }
 
-bool AutofillCCInfoBarDelegate::ShouldExpire(
-    const content::LoadCommittedDetails& details) const {
-  // The user has submitted a form, causing the page to navigate elsewhere. We
-  // don't want the infobar to be expired at this point, because the user won't
-  // get a chance to answer the question.
-  return false;
-}
-
 void AutofillCCInfoBarDelegate::InfoBarDismissed() {
   LogUserAction(AutofillMetrics::INFOBAR_DENIED);
 }
@@ -64,6 +56,14 @@
   return PAGE_ACTION_TYPE;
 }
 
+bool AutofillCCInfoBarDelegate::ShouldExpireInternal(
+    const content::LoadCommittedDetails& details) const {
+  // The user has submitted a form, causing the page to navigate elsewhere. We
+  // don't want the infobar to be expired at this point, because the user won't
+  // get a chance to answer the question.
+  return false;
+}
+
 string16 AutofillCCInfoBarDelegate::GetMessageText() const {
   return l10n_util::GetStringUTF16(IDS_AUTOFILL_CC_INFOBAR_TEXT);
 }