Enable history and downloads by default, port NewTabUI from DOMUIHost to DOMU...

chrome/browser/tab_contents/tab_contents_factory.cc

 // Copyright (c) 2006-2008 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 "base/string_util.h"
 #include "chrome/browser/browser_about_handler.h"
 #include "chrome/browser/browser_url_handler.h"
 #include "chrome/browser/dom_ui/dom_ui_contents.h"
 #include "chrome/browser/dom_ui/new_tab_ui.h"
 #include "chrome/browser/profile.h"
@@ skipping 34 matching lines @@
                                          SiteInstance* instance) {
   TabContents* contents = NULL;
 
   switch (type) {
     case TAB_CONTENTS_WEB:
       contents = new WebContents(profile, instance, NULL, MSG_ROUTING_NONE, NULL);
       break;
 // TODO(port): remove this platform define, either by porting the tab contents
 // types or removing them completely.
 #if defined(OS_WIN)
-    case TAB_CONTENTS_NEW_TAB_UI:
-      contents = new NewTabUIContents(profile, instance, NULL);
-      break;
     case TAB_CONTENTS_HTML_DIALOG:
       contents = new HtmlDialogContents(profile, instance, NULL);
       break;
     case TAB_CONTENTS_NATIVE_UI:
       contents = new NativeUIContents(profile);
       break;
     case TAB_CONTENTS_VIEW_SOURCE:
       contents = new ViewSourceContents(profile, instance);
       break;
     case TAB_CONTENTS_ABOUT_UI:
       contents = new BrowserAboutHandler(profile, instance, NULL);
       break;
     case TAB_CONTENTS_DEBUGGER:
-      contents = new DebuggerContents(profile, instance);
-      break;
+    case TAB_CONTENTS_NEW_TAB_UI:
     case TAB_CONTENTS_DOM_UI:
       contents = new DOMUIContents(profile, instance, NULL);
       break;
 #endif  // defined(OS_WIN)
     default:
       if (g_extra_types) {
         TabContentsFactoryMap::const_iterator it = g_extra_types->find(type);
         if (it != g_extra_types->end()) {
           contents = it->second->CreateInstance();
           break;
@@ skipping 70 matching lines @@
     g_extra_types->erase(type);
     if (g_extra_types->empty()) {
       delete g_extra_types;
       g_extra_types = NULL;
     }
   }
 
   return prev_factory;
 }