Make TabContents ctor private; poke hole for existing callers.

chrome/browser/ui/panels/base_panel_browser_test.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/panels/base_panel_browser_test.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
@@ skipping 384 matching lines @@
   return panel;
 }
 
 // static
 NativePanelTesting* BasePanelBrowserTest::CreateNativePanelTesting(
     Panel* panel) {
   return panel->native_panel()->CreateNativePanelTesting();
 }
 
 void BasePanelBrowserTest::CreateTestTabContents(Browser* browser) {
-  TabContents* tab_contents = new TabContents(
+  TabContents* tab_contents = TabContents::Factory::CreateTabContents(
       WebContentsTester::CreateTestWebContents(browser->profile(), NULL));
   chrome::AddTab(browser, tab_contents, content::PAGE_TRANSITION_LINK);
 }
 
 scoped_refptr<Extension> BasePanelBrowserTest::CreateExtension(
     const FilePath::StringType& path,
     Extension::Location location,
     const DictionaryValue& extra_value) {
 #if defined(OS_WIN)
   FilePath full_path(FILE_PATH_LITERAL("c:\\"));
@@ skipping 60 matching lines @@
 }
 
 void BasePanelBrowserTest::MoveMouse(const gfx::Point& position) {
   PanelManager::GetInstance()->mouse_watcher()->NotifyMouseMovement(position);
 }
 
 std::string BasePanelBrowserTest::MakePanelName(int index) {
   std::string panel_name("Panel");
   return panel_name + base::IntToString(index);
 }