Convert infobar APIs to UTF-16.

chrome/browser/autofill/autofill_cc_infobar_delegate.h

Index: chrome/browser/autofill/autofill_cc_infobar_delegate.h
diff --git a/chrome/browser/autofill/autofill_cc_infobar_delegate.h b/chrome/browser/autofill/autofill_cc_infobar_delegate.h
index 32a7c82cc5fbf42dca4675b6bbd782c6698cca51..965488f903b7bdab15ecf44136148f5e94e7c0d4 100644
--- a/chrome/browser/autofill/autofill_cc_infobar_delegate.h
+++ b/chrome/browser/autofill/autofill_cc_infobar_delegate.h
@@ -26,14 +26,14 @@ class AutoFillCCInfoBarDelegate : public ConfirmInfoBarDelegate {
   virtual bool ShouldExpire(
      const NavigationController::LoadCommittedDetails& details) const;
   virtual void InfoBarClosed();
-  virtual std::wstring GetMessageText() const;
+  virtual string16 GetMessageText() const;
   virtual SkBitmap* GetIcon() const;
   virtual int GetButtons() const;
-  virtual std::wstring GetButtonLabel(
+  virtual string16 GetButtonLabel(
      ConfirmInfoBarDelegate::InfoBarButton button) const;
   virtual bool Accept();
   virtual bool Cancel();
-  virtual std::wstring GetLinkText();
+  virtual string16 GetLinkText();
   virtual bool LinkClicked(WindowOpenDisposition disposition);
 
 #if defined(OS_WIN)