Disable first run for the New Tab Cold perf test....

chrome/browser/dom_ui/new_tab_ui.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #include "chrome/browser/dom_ui/new_tab_ui.h"
 
 #include <set>
 
@@ skipping 1480 matching lines @@
   // highly. Note this means we're including clicks on not only most visited
   // thumbnails, but also clicks on recently bookmarked.
   link_transition_type_ = PageTransition::AUTO_BOOKMARK;
 
   if (NewTabHTMLSource::first_view() &&
       (GetProfile()->GetPrefs()->GetInteger(prefs::kRestoreOnStartup) != 0 ||
        !GetProfile()->GetPrefs()->GetBoolean(prefs::kHomePageIsNewTabPage))) {
     NewTabHTMLSource::set_first_view(false);
   }
 
+  if (NewTabUI::FirstRunDisabled())
+    NewTabHTMLSource::set_first_run(false);
+
   tab_contents()->render_view_host()->set_paint_observer(new PaintTimer);
 
   if (GetProfile()->IsOffTheRecord()) {
     incognito_ = true;
 
     IncognitoTabHTMLSource* html_source = new IncognitoTabHTMLSource();
 
     g_browser_process->io_thread()->message_loop()->PostTask(FROM_HERE,
         NewRunnableMethod(&chrome_url_data_manager,
             &ChromeURLDataManager::AddDataSource,
@@ skipping 81 matching lines @@
 bool NewTabUI::UseOldNewTabPage() {
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   return command_line->HasSwitch(switches::kOldNewTabPage);
 }
 
 // static
 bool NewTabUI::WebResourcesEnabled() {
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   return command_line->HasSwitch(switches::kEnableWebResources);
 }
+
+// static
+bool NewTabUI::FirstRunDisabled() {
+  const CommandLine* command_line = CommandLine::ForCurrentProcess();
+  return command_line->HasSwitch(switches::kDisableNewTabFirstRun);
+}