Introduce --cancel-first-run and reduce the strength of --no-first-run.

chrome/test/webdriver/webdriver_automation.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/test/webdriver/webdriver_automation.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
@@ skipping 345 matching lines @@
   if (CommandLine::ForCurrentProcess()->HasSwitch("no-sandbox")) {
     command.AppendSwitch(switches::kNoSandbox);
   }
 
   const char* excludable_switches[] = {
       switches::kDisableHangMonitor,
       switches::kDisablePromptOnRepost,
       switches::kDomAutomationController,
       switches::kFullMemoryCrashReport,
       switches::kNoDefaultBrowserCheck,
-      switches::kNoFirstRun,
+      switches::kSkipFirstRun,
       switches::kDisableBackgroundNetworking,
       switches::kDisableSync,
       switches::kDisableTranslate,
       switches::kDisableWebResources,
       switches::kSbDisableAutoUpdate,
       switches::kSbDisableDownloadProtection,
       switches::kDisableClientSidePhishingDetection,
       switches::kDisableComponentUpdate,
       switches::kDisableDefaultApps
   };
@@ skipping 830 matching lines @@
 }
 
 Error* Automation::CheckMaximizeSupported() {
   const char* message =
       "Maximize automation interface is not supported for this version of "
       "Chrome.";
   return CheckVersion(1160, message);
 }
 
 }  // namespace webdriver