Implement new password separated sign in flow for chrome desktop.

components/signin/core/common/profile_management_switches.cc

 // Copyright 2014 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 "components/signin/core/common/profile_management_switches.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "build/build_config.h"
 #include "components/signin/core/common/signin_switches.h"
@@ skipping 120 matching lines @@
 
 bool IsNewProfileManagement() {
   return GetProcessState() >= STATE_NEW_PROFILE_MANAGEMENT;
 }
 
 bool IsNewProfileManagementPreviewEnabled() {
   // No promotion to Enable Account Consistency.
   return false;
 }
 
+bool UsePasswordSeparatedSigninFlow() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnablePasswordSeparatedSigninFlow);
+}
+
 void EnableNewProfileManagementForTesting(base::CommandLine* command_line) {
   command_line->AppendSwitch(switches::kEnableNewProfileManagement);
   DCHECK(!command_line->HasSwitch(switches::kDisableNewProfileManagement));
 }
 
 void EnableAccountConsistencyForTesting(base::CommandLine* command_line) {
   command_line->AppendSwitch(switches::kEnableAccountConsistency);
   DCHECK(!command_line->HasSwitch(switches::kDisableAccountConsistency));
 }
 
 }  // namespace switches