1 files changed, 18 insertions, 0 deletions
diff --git a/chrome/browser/extensions/theme_preview_infobar_delegate.cc b/chrome/browser/extensions/theme_preview_infobar_delegate.cc
index b55df72..75c1ce8 100644
--- a/chrome/browser/extensions/theme_preview_infobar_delegate.cc
+++ b/chrome/browser/extensions/theme_preview_infobar_delegate.cc
@@ -16,6 +16,19 @@ ThemePreviewInfobarDelegate::ThemePreviewInfobarDelegate(
            profile_(tab_contents->profile()), name_(name) {
 }
 
+bool ThemePreviewInfobarDelegate::EqualsDelegate(InfoBarDelegate* delegate)
+    const {
+  // If another infobar of this type is showing, this will prevent us adding
+  // a new one, we only care if they're the same type, as pressing undo always
+  // has the same result each time. This does mean that the text continues
+  // to refer to the old theme, but this is good enough for beta.
+  // http://crbug.com/17932
+  if (delegate->AsThemePreviewInfobarDelegate())
+    return true;
+
+  return false;
+}
+
 void ThemePreviewInfobarDelegate::InfoBarClosed() {
   delete this;
 }
@@ -31,6 +44,11 @@ SkBitmap* ThemePreviewInfobarDelegate::GetIcon() const {
   return NULL;
 }
 
+ThemePreviewInfobarDelegate*
+    ThemePreviewInfobarDelegate::AsThemePreviewInfobarDelegate() {
+  return this;
+}
+
 int ThemePreviewInfobarDelegate::GetButtons() const {
   return BUTTON_CANCEL;
 }