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

chrome/browser/dom_ui/dom_ui.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 "chrome/browser/dom_ui/dom_ui.h"
 
 #include "base/json_reader.h"
 #include "base/json_writer.h"
 #include "base/string_util.h"
 #include "base/values.h"
@@ skipping 61 matching lines @@
   javascript += L"," + UTF8ToWide(json) + L");";
 
   ExecuteJavascript(javascript);
 }
 
 void DOMUI::RegisterMessageCallback(const std::string &message, 
                                     MessageCallback *callback) {
   message_callbacks_.insert(std::make_pair(message, callback));
 }
 
+void DOMUI::RequestOpenURL(const GURL& url,
+                           const GURL& /* referer */,
+                           WindowOpenDisposition disposition) {
+  get_contents()->OpenURL(url, GURL(), disposition, PageTransition::LINK);
+}
+
 // DOMUI, protected: ----------------------------------------------------------
 
 void DOMUI::AddMessageHandler(DOMMessageHandler* handler) {
   handlers_.push_back(handler);
 }
 
 // DOMUI, private: ------------------------------------------------------------
 
 void DOMUI::ExecuteJavascript(const std::wstring& javascript) {
   DCHECK(contents_);
@@ skipping 69 matching lines @@
       const StringValue* string_value =
           static_cast<const StringValue*>(list_member);
       std::wstring wstring_value;
       string_value->GetAsString(&wstring_value);
       return wstring_value;
     }
   }
   return std::wstring();
 }