Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/browser/ui/webui/test_html_dialog_ui_delegate.cc

 // Copyright (c) 2011 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/webui/test_html_dialog_ui_delegate.h"
 
 #include "base/utf_string_conversions.h"
 
 using content::WebContents;
+using content::WebUIMessageHandler;
 
 namespace test {
 
 TestHtmlDialogUIDelegate::TestHtmlDialogUIDelegate(const GURL& url)
     : url_(url),
       size_(400, 400) {
 }
 
 TestHtmlDialogUIDelegate::~TestHtmlDialogUIDelegate() {
 }
@@ skipping 29 matching lines @@
     bool* out_close_dialog) {
   if (out_close_dialog)
     *out_close_dialog = true;
 }
 
 bool TestHtmlDialogUIDelegate::ShouldShowDialogTitle() const {
   return true;
 }
 
 }  // namespace test