Provide WebContents::CreateParams to tab helpers.

chrome/browser/ui/browser_tab_strip_model_delegate.cc

 // 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.
 
 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 68 matching lines @@
     // TODO(beng): find a better way of doing this.
     static_cast<content::WebContentsDelegate*>(browser)->
         LoadingStateChanged(item.web_contents, true);
   }
 
   return browser;
 }
 
 void BrowserTabStripModelDelegate::WillAddWebContents(
     content::WebContents* contents) {
-  TabHelpers::AttachTabHelpers(contents);
+  TabHelpers::AttachTabHelpers(contents, base::nullopt);
 
   // Make the tab show up in the task manager.
   task_manager::WebContentsTags::CreateForTabContents(contents);
 }
 
 int BrowserTabStripModelDelegate::GetDragActions() const {
   return TabStripModelDelegate::TAB_TEAROFF_ACTION |
       (browser_->tab_strip_model()->count() > 1
           ? TabStripModelDelegate::TAB_MOVE_ACTION : 0);
 }
@@ skipping 52 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // BrowserTabStripModelDelegate, private:
 
 void BrowserTabStripModelDelegate::CloseFrame() {
   browser_->window()->Close();
 }
 
 }  // namespace chrome