Allow WebUI Tests to use preLoad in HtmlDialogUI.

chrome/test/data/webui/certificate_viewer_ui_test-inl.h

 // 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/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/webui/chrome_web_ui.h"
 #include "chrome/browser/ui/webui/web_ui_browsertest.h"
 #include "chrome/browser/certificate_viewer.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "chrome/test/base/test_html_dialog_observer.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/webui/web_ui.h"
 #include "net/base/test_certificate_data.h"
 #include "net/base/x509_certificate.h"
 
 // Test framework for chrome/test/data/webui/certificate_viewer_dialog_test.js.
 class CertificateViewerUITest : public WebUIBrowserTest {
  public:
   CertificateViewerUITest();
   virtual ~CertificateViewerUITest();
 
- private:
-  virtual void SetUpOnMainThread() OVERRIDE;
+ protected:
+  virtual void ShowCertificateViewer();
 };
 
-void CertificateViewerUITest::SetUpOnMainThread() {
+void CertificateViewerUITest::ShowCertificateViewer() {
   // Enable more WebUI to use WebUI certificate viewer.
   ChromeWebUI::OverrideMoreWebUI(true);
 
   scoped_refptr<net::X509Certificate> google_cert(
       net::X509Certificate::CreateFromBytes(
           reinterpret_cast<const char*>(google_der), sizeof(google_der)));
 
   ASSERT_TRUE(browser());
   ASSERT_TRUE(browser()->window());
 
-  TestHtmlDialogObserver dialog_observer;
-  ShowCertificateViewer(browser()->window()->GetNativeHandle(), google_cert);
+  TestHtmlDialogObserver dialog_observer(this);
+  ::ShowCertificateViewer(browser()->window()->GetNativeHandle(), google_cert);
   WebUI* webui = dialog_observer.GetWebUI();
   webui->tab_contents()->render_view_host()->SetWebUIProperty(
       "expectedUrl", chrome::kChromeUICertificateViewerURL);
   SetWebUIInstance(webui);
   WebUIBrowserTest::SetUpOnMainThread();
 }