Make WebUI Task Manager use ShowWebDialog directly rather than calling it with a Browser/use Browse…

chrome/browser/ui/webui/task_manager/task_manager_dialog.cc

 // Copyright (c) 2012 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/task_manager_dialog.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_dialogs.h"
-#include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/webui/web_dialog_delegate.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "content/public/browser/browser_thread.h"
 #include "grit/google_chrome_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_CHROMEOS)
 #include "ui/views/widget/widget.h"
 #endif
 
 namespace {
 
 // The minimum size of task manager window in px.
@@ skipping 147 matching lines @@
   OpenWebDialog();
   ++show_count_;
 }
 
 void TaskManagerDialogImpl::OnCloseDialog() {
   if (show_count_ > 0)
     --show_count_;
 }
 
 void TaskManagerDialogImpl::OpenWebDialog() {
-  Browser* browser = BrowserList::GetLastActive();
-  DCHECK(browser);
-  window_ = browser::ShowWebDialog(
-      NULL, browser->profile()->GetOriginalProfile(), NULL, this);
+  window_ = browser::ShowWebDialog(NULL,
+                                   ProfileManager::GetDefaultProfile(),
+                                   NULL,
+                                   this);
 }
 
 // static
 void TaskManagerDialog::Show() {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&TaskManagerDialogImpl::Show, false));
 }
 
 // static
 void TaskManagerDialog::ShowBackgroundPages() {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&TaskManagerDialogImpl::Show, true));
 }
 
 // static
 bool TaskManagerDialog::UseWebUITaskManager() {
   return CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kWebUITaskManager);
 }