Make TabContents ctor private; poke hole for existing callers.

chrome/browser/ui/extensions/shell_window.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/extensions/shell_window.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
 #include "chrome/browser/file_select_helper.h"
@@ skipping 73 matching lines @@
       web_contents_(NULL),
       ALLOW_THIS_IN_INITIALIZER_LIST(
           extension_function_dispatcher_(profile, this)) {
 }
 
 void ShellWindow::Init(const GURL& url,
                        const ShellWindow::CreateParams& params) {
   web_contents_ = WebContents::Create(
       profile(), SiteInstance::CreateForURL(profile(), url), MSG_ROUTING_NONE,
       NULL);
-  contents_.reset(new TabContents(web_contents_));
+  contents_.reset(TabContents::Factory::CreateTabContents(web_contents_));
   content::WebContentsObserver::Observe(web_contents_);
   web_contents_->SetDelegate(this);
   chrome::SetViewType(web_contents_, chrome::VIEW_TYPE_APP_SHELL);
   web_contents_->GetMutableRendererPrefs()->
       browser_handles_all_top_level_requests = true;
   web_contents_->GetRenderViewHost()->SyncRendererPrefs();
 
   native_window_.reset(NativeShellWindow::Create(this, params));
 
   // Block the created RVH from loading anything until the background page
@@ skipping 264 matching lines @@
   extension_function_dispatcher_.Dispatch(params,
                                           web_contents_->GetRenderViewHost());
 }
 
 void ShellWindow::AddMessageToDevToolsConsole(ConsoleMessageLevel level,
                                               const std::string& message) {
   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
   rvh->Send(new ExtensionMsg_AddMessageToConsole(
       rvh->GetRoutingID(), level, message));
 }