Add method for identifying different InfoBars

components/translate/core/browser/translate_infobar_delegate.cc

Index: components/translate/core/browser/translate_infobar_delegate.cc
diff --git a/components/translate/core/browser/translate_infobar_delegate.cc b/components/translate/core/browser/translate_infobar_delegate.cc
index d0384669fbaf31cff46c0554fda1ef507733b632..c5308990b414b2964966f693bdeceea2af8b4cc5 100644
--- a/components/translate/core/browser/translate_infobar_delegate.cc
+++ b/components/translate/core/browser/translate_infobar_delegate.cc
@@ -50,6 +50,11 @@ const size_t TranslateInfoBarDelegate::kNoIndex = TranslateUIDelegate::kNoIndex;
 TranslateInfoBarDelegate::~TranslateInfoBarDelegate() {
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+TranslateInfoBarDelegate::GetIdentifier() const {
+  return TRANSLATE_INFOBAR_DELEGATE_ID;
+}
+
 // static
 void TranslateInfoBarDelegate::Create(
     bool replace_existing_infobar,