Enable web-based sign in flow by default. Can use command line argument

chrome/browser/about_flags.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/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 844 matching lines @@
   },
   {
     "allow-touchpad-three-finger-swipe",
     IDS_FLAGS_ALLOW_TOUCHPAD_THREE_FINGER_SWIPE_NAME,
     IDS_FLAGS_ALLOW_TOUCHPAD_THREE_FINGER_SWIPE_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kEnableTouchpadThreeFingerSwipe)
   },
 #endif
   {
-    "use-web-based-signin-flow",
-    IDS_FLAGS_USE_WEB_BASED_SIGNIN_FLOW_NAME,
-    IDS_FLAGS_USE_WEB_BASED_SIGNIN_FLOW_DESCRIPTION,
+    "use-client-login-signin-flow",
+    IDS_FLAGS_USE_CLIENT_LOGIN_SIGNIN_FLOW_NAME,
+    IDS_FLAGS_USE_CLIENT_LOGIN_SIGNIN_FLOW_DESCRIPTION,
     kOsMac | kOsWin | kOsLinux,
-    SINGLE_VALUE_TYPE(switches::kUseWebBasedSigninFlow)
+    SINGLE_VALUE_TYPE(switches::kUseClientLoginSigninFlow)
   },
   {
     "enable-desktop-guest-mode",
     IDS_FLAGS_DESKTOP_GUEST_MODE_NAME,
     IDS_FLAGS_DESKTOP_GUEST_MODE_DESCRIPTION,
     kOsMac | kOsWin | kOsLinux,
     SINGLE_VALUE_TYPE(switches::kEnableDesktopGuestMode)
   },
 #if defined(USE_ASH)
   {
@@ skipping 722 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags