Change infobar creation to use a public static Create() method on the infobar delegate classes.

chrome/browser/ui/cocoa/content_settings/collected_cookies_mac.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/ui/cocoa/content_settings/collected_cookies_mac.h"
 
 #include <vector>
 
 #include "base/mac/bundle_locations.h"
 #import "base/mac/mac_util.h"
@@ skipping 196 matching lines @@
   [[detailsViewController_.get() view] setFrame:viewFrameRect];
   [[cookieDetailsViewPlaceholder_ superview]
       replaceSubview:cookieDetailsViewPlaceholder_
                 with:detailView];
 
   [self tabView:tabView_ didSelectTabViewItem:[tabView_ selectedTabViewItem]];
 }
 
 - (void)windowWillClose:(NSNotification*)notif {
   if (contentSettingsChanged_) {
-    InfoBarService* infobarService =
-        InfoBarService::FromWebContents(webContents_);
-    infobarService->AddInfoBar(
-        new CollectedCookiesInfoBarDelegate(infobarService));
+    CollectedCookiesInfoBarDelegate::Create(
+        InfoBarService::FromWebContents(webContents_));
   }
   [allowedOutlineView_ setDelegate:nil];
   [blockedOutlineView_ setDelegate:nil];
   [animation_ stopAnimation];
 }
 
 - (IBAction)closeSheet:(id)sender {
   collectedCookiesMac_->PerformClose();
 }
 
@@ skipping 283 matching lines @@
       treeController = blockedTreeController_;
       break;
     default:
       NOTREACHED();
       return;
   }
   [detailsViewController_ configureBindingsForTreeController:treeController];
 }
 
 @end