WebUI TaskManager: make it default on Chrome OS

chrome/browser/ui/webui/task_manager_dialog.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/task_manager_dialog.h"
 
 #include "base/memory/singleton.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/webui/html_dialog_ui.h"
 #include "chrome/common/url_constants.h"
 #include "grit/google_chrome_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 class TaskManagerDialogImpl : public HtmlDialogUIDelegate {
  public:
   TaskManagerDialogImpl();
 
   static void Show();
   static TaskManagerDialogImpl* GetInstance();
 
-  void ShowDialog();
-
  protected:
   friend struct DefaultSingletonTraits<TaskManagerDialogImpl>;
   virtual ~TaskManagerDialogImpl();
 
   void OnCloseDialog();
 
   // Overridden from HtmlDialogUIDelegate:
   virtual bool IsDialogModal() const {
     return false;
   }
@@ skipping 21 matching lines @@
     OnCloseDialog();
   }
   virtual bool ShouldShowDialogTitle() const {
     return false;
   }
   virtual bool HandleContextMenu(const ContextMenuParams& params) {
     return true;
   }
 
  private:
+  void ShowDialog();
   void OpenHtmlDialog();
 
   bool is_shown_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerDialogImpl);
 };
 
 // ****************************************************
 
 // static
 TaskManagerDialogImpl* TaskManagerDialogImpl::GetInstance() {
   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::FILE));
   return Singleton<TaskManagerDialogImpl>::get();
 }
 
 TaskManagerDialogImpl::TaskManagerDialogImpl() : is_shown_(false) {
 }
 
 TaskManagerDialogImpl::~TaskManagerDialogImpl() {
 }
 
+void TaskManagerDialogImpl::Show() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  TaskManagerDialogImpl* dialog = TaskManagerDialogImpl::GetInstance();
+  dialog->ShowDialog();
+}
+
 void TaskManagerDialogImpl::ShowDialog() {
   // TODO(yoshiki): Brings up existing UI when called with is_shown_ == TRUE
   if (!is_shown_) {
     is_shown_ = true;
     OpenHtmlDialog();
   }
 }
 
 void TaskManagerDialogImpl::OnCloseDialog() {
   if (is_shown_)
     is_shown_ = false;
 }
 
 void TaskManagerDialogImpl::OpenHtmlDialog() {
   Browser* browser = BrowserList::GetLastActive();
   browser->BrowserShowHtmlDialog(this, NULL);
 }
 
 // ****************************************************
 //
 // static
 void TaskManagerDialog::Show() {
-  TaskManagerDialogImpl* dialog = TaskManagerDialogImpl::GetInstance();
-  dialog->ShowDialog();
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      NewRunnableFunction(&TaskManagerDialogImpl::Show));
 }