Adds testing infrastructure to web_ui_browsertest to support testing HtmlDialogs.

chrome/browser/ui/webui/html_dialog_ui.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/html_dialog_ui.h"
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
 #include "base/values.h"
+#include "chrome/common/chrome_notification_types.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/common/bindings_policy.h"
+#include "content/common/notification_service.h"
 
 static base::LazyInstance<PropertyAccessor<HtmlDialogUIDelegate*> >
     g_html_dialog_ui_property_accessor(base::LINKER_INITIALIZED);
 
 HtmlDialogUI::HtmlDialogUI(TabContents* tab_contents)
     : ChromeWebUI(tab_contents) {
 }
 
 HtmlDialogUI::~HtmlDialogUI() {
   // Don't unregister our property. During the teardown of the TabContents,
@@ skipping 30 matching lines @@
     (*delegate)->GetWebUIMessageHandlers(&handlers);
   }
 
   if (0 != (bindings_ & BindingsPolicy::WEB_UI))
     render_view_host->SetWebUIProperty("dialogArguments", dialog_args);
   for (std::vector<WebUIMessageHandler*>::iterator it = handlers.begin();
        it != handlers.end(); ++it) {
     (*it)->Attach(this);
     AddMessageHandler(*it);
   }
+
+  NotificationService::current()->Notify(
+      chrome::NOTIFICATION_HTML_DIALOG_SHOWN,
+      Source<HtmlDialogUI>(this),
+      NotificationService::NoDetails());
 }
 
 void HtmlDialogUI::OnDialogClosed(const ListValue* args) {
   HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty(
       tab_contents()->property_bag());
   if (delegate) {
     std::string json_retval;
     if (!args->GetString(0, &json_retval))
       NOTREACHED() << "Could not read JSON arguments";
 
     (*delegate)->OnDialogClosed(json_retval);
   }
 }
 
 ExternalHtmlDialogUI::ExternalHtmlDialogUI(TabContents* tab_contents)
     : HtmlDialogUI(tab_contents) {
   // Non-file based UI needs to not have access to the Web UI bindings
   // for security reasons. The code hosting the dialog should provide
   // dialog specific functionality through other bindings and methods
   // that are scoped in duration to the dialogs existence.
   bindings_ &= ~BindingsPolicy::WEB_UI;
 }
 
 ExternalHtmlDialogUI::~ExternalHtmlDialogUI() {
 }
 
 bool HtmlDialogUIDelegate::HandleContextMenu(const ContextMenuParams& params) {
   return false;
 }