Add method for identifying different InfoBars

chrome/browser/plugins/plugin_infobar_delegates.cc

Index: chrome/browser/plugins/plugin_infobar_delegates.cc
diff --git a/chrome/browser/plugins/plugin_infobar_delegates.cc b/chrome/browser/plugins/plugin_infobar_delegates.cc
index 80cb2ebcbf58d20c8d245447e4835f6c353e693a..35fb5ff371df55f5aed2d2c3d29e2496916628b9 100644
--- a/chrome/browser/plugins/plugin_infobar_delegates.cc
+++ b/chrome/browser/plugins/plugin_infobar_delegates.cc
@@ -103,6 +103,11 @@ OutdatedPluginInfoBarDelegate::~OutdatedPluginInfoBarDelegate() {
   content::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Closed"));
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+OutdatedPluginInfoBarDelegate::GetIdentifier() const {
+  return OUTDATED_PLUGIN_INFOBAR_DELEGATE;
+}
+
 void OutdatedPluginInfoBarDelegate::InfoBarDismissed() {
   content::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Dismissed"));
 }
@@ -234,6 +239,11 @@ PluginMetroModeInfoBarDelegate::PluginMetroModeInfoBarDelegate(
 PluginMetroModeInfoBarDelegate::~PluginMetroModeInfoBarDelegate() {
 }
 
+infobars::InfoBarDelegate::InfoBarIdentifier
+PluginMetroModeInfoBarDelegate::GetIdentifier() const {
+  return PLUGIN_METRO_MODE_INFOBAR_DELEGATE;
+}
+
 int PluginMetroModeInfoBarDelegate::GetIconId() const {
   return IDR_INFOBAR_PLUGIN_INSTALL;
 }