Make TabContents ctor private; poke hole for existing callers.

chrome/browser/extensions/api/offscreen_tabs/offscreen_tabs_api.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/extensions/api/offscreen_tabs/offscreen_tabs_api.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/hash_tables.h"
@@ skipping 34 matching lines @@
 using content::NavigationController;
 using content::NotificationDetails;
 using content::NotificationSource;
 using content::WebContents;
 using WebKit::WebInputEvent;
 
 namespace keys = extensions::offscreen_tabs_constants;
 namespace tabs_keys = extensions::tabs_constants;
 namespace events = extensions::event_names;
 
+// TODO(avi): Kill this when TabContents goes away.
+class OffscreenTabContentsCreator {
+ public:
+  static TabContents* CreateTabContents(content::WebContents* contents) {
+    return TabContents::Factory::CreateTabContents(contents);
+  }
+};
+
 namespace {
 
 class ParentTab;
 
 // This class is responsible for the life cycle of an offscreen tab.
 class OffscreenTab : public content::NotificationObserver {
  public:
   OffscreenTab();
   virtual ~OffscreenTab();
   void Init(const GURL& url,
@@ skipping 156 matching lines @@
 OffscreenTab::~OffscreenTab() {}
 
 void OffscreenTab::Init(const GURL& url,
                         const int width,
                         const int height,
                         Profile* profile,
                         ParentTab* parent_tab) {
   // Create the offscreen tab.
   WebContents* web_contents = WebContents::Create(
       profile, NULL, MSG_ROUTING_NONE, NULL);
-  tab_contents_.reset(new TabContents(web_contents));
+  tab_contents_.reset(
+      OffscreenTabContentsCreator::CreateTabContents(web_contents));
 
   // Setting the size starts the renderer.
   SetSize(width, height);
   NavigateToURL(url);
 
   parent_tab_ = parent_tab;
 
   // Register for tab notifications.
   registrar_.Add(
       this,
@@ skipping 588 matching lines @@
   // async case (when a "javascript": URL is sent to a tab).
   if (!is_async)
     SendResponse(true);
 
   return true;
 }
 
 void UpdateOffscreenTabFunction::PopulateResult() {
   // There's no result associated with this callback.
 }