Show About in a window too.

chrome/browser/ui/chrome_pages.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/chrome_pages.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
@@ skipping 270 matching lines @@
   ShowSettingsSubPage(browser, kPasswordManagerSubPage);
 }
 
 void ShowImportDialog(Browser* browser) {
   content::RecordAction(UserMetricsAction("Import_ShowDlg"));
   ShowSettingsSubPage(browser, kImportDataSubPage);
 }
 
 void ShowAboutChrome(Browser* browser) {
   content::RecordAction(UserMetricsAction("AboutChrome"));
+  if (::switches::SettingsWindowEnabled()) {
+    SettingsWindowManager::GetInstance()->ShowChromePageForProfile(
+        browser->profile(), GURL(kChromeUIUberURL));
+    return;
+  }
   NavigateParams params(
       GetSingletonTabNavigateParams(browser, GURL(kChromeUIUberURL)));
   params.path_behavior = NavigateParams::IGNORE_AND_NAVIGATE;
   ShowSingletonTabOverwritingNTP(browser, params);
 }
 
 void ShowSearchEngineSettings(Browser* browser) {
   content::RecordAction(UserMetricsAction("EditSearchEngines"));
   ShowSettingsSubPage(browser, kSearchEnginesSubPage);
 }
@@ skipping 16 matching lines @@
           original_profile, chrome::HOST_DESKTOP_TYPE_NATIVE));
       browser = displayer->browser();
     }
 
     NavigateToSingletonTab(browser, GURL(signin::GetPromoURL(source, false)));
     DCHECK_GT(browser->tab_strip_model()->count(), 0);
   }
 }
 
 }  // namespace chrome