Try again to land: http://codereview.chromium.org/160483

chrome/browser/extensions/theme_preview_infobar_delegate.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/theme_preview_infobar_delegate.h"
 
 #include "app/l10n_util.h"
 #include "base/string_util.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "grit/generated_resources.h"
 
 ThemePreviewInfobarDelegate::ThemePreviewInfobarDelegate(
     TabContents* tab_contents, const std::string& name)
          : ConfirmInfoBarDelegate(tab_contents),
            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;
 }
 
 std::wstring ThemePreviewInfobarDelegate::GetMessageText() const {
   return l10n_util::GetStringF(IDS_THEME_PREVIEW_INFOBAR_LABEL,
                                UTF8ToWide(name_));
 }
 
 SkBitmap* ThemePreviewInfobarDelegate::GetIcon() const {
@@ skipping 25 matching lines @@
   // Blech, this is a total hack.
   //
   // a) We should be uninstalling via ExtensionsService, not
   //    Profile::ClearTheme().
   // b) We should be able to view the theme without installing it. This would
   //    help in edge cases like the user closing the window or tab before making
   //    a decision.
   profile_->ClearTheme();
   return true;
 }