[Desktop FRE] Do not show Welcome page to profiles created in M56 or M57

chrome/browser/ui/startup/startup_browser_creator.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_H_
 #define CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 89 matching lines @@
   bool show_main_browser_window() const {
     return show_main_browser_window_;
   }
 
   // For faking that no profiles have been launched yet.
   static void ClearLaunchedProfilesForTesting();
 
   static void RegisterLocalStatePrefs(PrefRegistrySimple* registry);
   static void RegisterProfilePrefs(PrefRegistrySimple* registry);
 
+  // Returns whether the Consolidated startup flow will be used, based on the
+  // platform-appropriate Feature.
+  // TODO(tmartino): Remove once this is on 100%.
+  static bool UseConsolidatedFlow();
+
  private:
   friend class CloudPrintProxyPolicyTest;
   friend class CloudPrintProxyPolicyStartupTest;
   friend class StartupBrowserCreatorImpl;
   // TODO(crbug.com/642442): Remove this when first_run_tabs gets refactored.
   friend class StartupTabProviderImpl;
   FRIEND_TEST_ALL_PREFIXES(StartupBrowserCreatorTest,
                            ReadingWasRestartedAfterNormalStart);
   FRIEND_TEST_ALL_PREFIXES(StartupBrowserCreatorTest,
                            ReadingWasRestartedAfterRestart);
@@ skipping 75 matching lines @@
                            const base::CommandLine& command_line);
 
 // Returns the profile that should be loaded on process startup when
 // GetStartupProfile() returns null. As with GetStartupProfile(), returning the
 // guest profile means the caller should open the user manager. This may return
 // null if neither any profile nor the user manager can be opened.
 Profile* GetFallbackStartupProfile();
 #endif  // !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 
 #endif  // CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_H_