Added flag gaia-endpoint for testing with different flows

chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.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/browser/ui/webui/chromeos/login/gaia_screen_handler.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
@@ skipping 204 matching lines @@
   }
 
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 
   const GURL gaia_url =
       command_line->HasSwitch(::switches::kGaiaUrl)
           ? GURL(command_line->GetSwitchValueASCII(::switches::kGaiaUrl))
           : GaiaUrls::GetInstance()->gaia_url();
   params.SetString("gaiaUrl", gaia_url.spec());
 
+  if (command_line->HasSwitch(switches::kGaiaEndpointChromeOS)) {
+    params.SetString("gaiaEndpoint", command_line->GetSwitchValueASCII(
+                                         switches::kGaiaEndpointChromeOS));
+  }
   if (context.embedded_signin_enabled) {
     params.SetBoolean("useEmbedded", true);
     // We set 'constrained' here to switch troubleshooting page on embedded
     // signin to full tab.
     params.SetInteger("constrained", 1);
   }
 
   frame_state_ = FRAME_STATE_LOADING;
   CallJS("loadAuthExtension", params);
 }
@@ skipping 516 matching lines @@
 
 SigninScreenHandlerDelegate* GaiaScreenHandler::Delegate() {
   DCHECK(signin_screen_handler_);
   return signin_screen_handler_->delegate_;
 }
 
 void GaiaScreenHandler::SetSigninScreenHandler(SigninScreenHandler* handler) {
   signin_screen_handler_ = handler;
 }
 }  // namespace chromeos