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

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index be7c3a9af92e14e3e9cbb182112bc068b3290933..2b2e5f10d058cee37f41b465e7aa221265531213 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -15339,11 +15339,11 @@ Some features may be unavailable.  Please check that the profile exists and you
       Dark Theme
     </message>
 
-    <message name="IDS_FLAGS_USE_WEB_BASED_SIGNIN_FLOW_NAME" desc="Name of about:flag option to turn on web-based sign in">
-      Enable GAIA web-based signin
+    <message name="IDS_FLAGS_USE_CLIENT_LOGIN_SIGNIN_FLOW_NAME" desc="Name of about:flag option to turn on client-login-based sign in">
+      Enable ClientLogin based signin
     </message>
-    <message name="IDS_FLAGS_USE_WEB_BASED_SIGNIN_FLOW_DESCRIPTION" desc="Description of about:flag option to turn on web-based sign in">
-      When enabled, will use a GAIA web-based sign in flow to connect a profile to a Google account.  Otherwise ClientLogin is used.
+    <message name="IDS_FLAGS_USE_CLIENT_LOGIN_SIGNIN_FLOW_DESCRIPTION" desc="Description of about:flag option to turn on client-login-based sign in">
+      When enabled, will use a ClientLigin based sign in flow to connect a profile to a Google account.  Otherwise use a web-based flow.
       The web-based flow permits using verification codes instead of ASPs during authentication.
     </message>