Moving new First Run to use per-profile value, rather than simply checking IsChromeFirstRun.

chrome/browser/prefs/browser_prefs.cc

 // Copyright 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/prefs/browser_prefs.h"
 
 #include <string>
 
 #include "base/files/file_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 568 matching lines @@
   NewTabUI::RegisterProfilePrefs(registry);
   PepperFlashSettingsManager::RegisterProfilePrefs(registry);
   PinnedTabCodec::RegisterProfilePrefs(registry);
   signin::RegisterProfilePrefs(registry);
 #endif
 
 #if !defined(OS_ANDROID)
   browser_sync::ForeignSessionHandler::RegisterProfilePrefs(registry);
   gcm::GCMChannelStatusSyncer::RegisterProfilePrefs(registry);
   gcm::RegisterProfilePrefs(registry);
+  StartupBrowserCreator::RegisterProfilePrefs(registry);
 #endif
 
 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
   default_apps::RegisterProfilePrefs(registry);
 #endif
 
 #if defined(OS_CHROMEOS)
   arc::ArcAuthService::RegisterProfilePrefs(registry);
   chromeos::first_run::RegisterProfilePrefs(registry);
   chromeos::file_system_provider::RegisterProfilePrefs(registry);
@@ skipping 181 matching lines @@
   // Added 8/2016.
   profile_prefs->ClearPref(kStaticEncodings);
   profile_prefs->ClearPref(kRecentlySelectedEncoding);
 
   // Added 9/2016.
   profile_prefs->ClearPref(kWebKitUsesUniversalDetector);
   profile_prefs->ClearPref(kWebKitAllowDisplayingInsecureContent);
 }
 
 }  // namespace chrome