Use --new-profile-management to set all related flags.

chrome/common/profile_management_switches.cc

 // Copyright 2013 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/common/profile_management_switches.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "chrome/common/chrome_switches.h"
 
 namespace {
 
 const char kNewProfileManagementFieldTrialName[] = "NewProfileManagement";
 
 bool CheckProfileManagementFlag(std::string command_switch, bool active_state) {
+  // Individiual flag settings take precedence.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(command_switch)) {
+    return true;
+  }
+
+  // --new-profile-management flag always affects all switches.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+        switches::kNewProfileManagement)) {
+    return active_state;
+  }
+
+  // NewProfileManagement experiment acts like above flag.
   std::string trial_type =
       base::FieldTrialList::FindFullName(kNewProfileManagementFieldTrialName);
   if (!trial_type.empty()) {
     if (trial_type == "Enabled")
       return active_state;
     if (trial_type == "Disabled")
       return !active_state;
   }
-  return CommandLine::ForCurrentProcess()->HasSwitch(command_switch);
+
+  return false;
 }
 
 }  // namespace
 
 namespace switches {
 
 bool IsEnableWebBasedSignin() {
   return CheckProfileManagementFlag(switches::kEnableWebBasedSignin, false);
 }
 
 bool IsGoogleProfileInfo() {
   return CheckProfileManagementFlag(switches::kGoogleProfileInfo, true);
 }
 
 bool IsNewProfileManagement() {
   return CheckProfileManagementFlag(switches::kNewProfileManagement, true);
 }
 
 }  // namespace switches