When creating a tab contents for a browser in the RVHDelegateHelper, create a wrapper immediately.

chrome/browser/tab_contents/render_view_host_delegate_helper.cc

 // Copyright (c) 2011 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/tab_contents/render_view_host_delegate_helper.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 245 matching lines @@
   TabContents* new_contents = CreateNewWindow(
       route_id,
       Profile::FromBrowserContext(tab_contents->browser_context()),
       tab_contents->GetSiteInstance(),
       tab_contents->GetWebUITypeForCurrentState(),
       tab_contents,
       params.window_container_type,
       params.frame_name);
 
   if (new_contents) {
+    if (tab_contents->delegate())
+      tab_contents->delegate()->TabContentsCreated(new_contents);
+
     content::RetargetingDetails details;
     details.source_tab_contents = tab_contents;
     details.source_frame_id = params.opener_frame_id;
     details.target_url = params.target_url;
     details.target_tab_contents = new_contents;
     content::NotificationService::current()->Notify(
         content::NOTIFICATION_RETARGETING,
         content::Source<content::BrowserContext>(
             tab_contents->browser_context()),
         content::Details<content::RetargetingDetails>(&details));
-
-    if (tab_contents->delegate())
-      tab_contents->delegate()->TabContentsCreated(new_contents);
   } else {
     content::NotificationService::current()->Notify(
         content::NOTIFICATION_CREATING_NEW_WINDOW_CANCELLED,
         content::Source<TabContents>(tab_contents),
         content::Details<const ViewHostMsg_CreateWindow_Params>(&params));
   }
 
   return new_contents;
 }
 
@@ skipping 256 matching lines @@
   DictionaryValue* inspector_settings = update.Get();
   inspector_settings->SetWithoutPathExpansion(key,
                                               Value::CreateStringValue(value));
 }
 
 void RenderViewHostDelegateHelper::ClearInspectorSettings(
     content::BrowserContext* browser_context) {
   Profile::FromBrowserContext(browser_context)->GetPrefs()->
       ClearPref(prefs::kWebKitInspectorSettings);
 }