Exclude building signin view controller and its delegate on ChromeOS

chrome/browser/ui/webui/welcome_handler.cc

 // Copyright 2016 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/welcome_handler.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/user_metrics.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
@@ skipping 33 matching lines @@
 
 // Handles backend events necessary when user clicks "Sign in."
 void WelcomeHandler::HandleActivateSignIn(const base::ListValue* args) {
   if (SigninManagerFactory::GetForProfile(profile_)->IsAuthenticated()) {
     // In general, this page isn't shown to signed-in users; however, if one
     // should arrive here, then opening the sign-in dialog will likely lead
     // to a crash. Thus, we just act like sign-in was "successful" and whisk
     // them away to the NTP instead.
     GoToNewTabPage();
   } else {
-    GetBrowser()->ShowModalSigninWindow(
-        profiles::BubbleViewMode::BUBBLE_VIEW_MODE_GAIA_SIGNIN,
+    Browser* browser = GetBrowser();
+    browser->signin_view_controller()->ShowModalSignin(
+        profiles::BubbleViewMode::BUBBLE_VIEW_MODE_GAIA_SIGNIN, browser,
         signin_metrics::AccessPoint::ACCESS_POINT_START_PAGE);
   }
 }
 
 // Handles backend events necessary when user clicks "No thanks."
 void WelcomeHandler::HandleUserDecline(const base::ListValue* args) {
   result_ = WelcomeResult::DECLINED;
   GoToNewTabPage();
 }
 
@@ skipping 14 matching lines @@
 }
 
 Browser* WelcomeHandler::GetBrowser() {
   DCHECK(web_ui());
   content::WebContents* contents = web_ui()->GetWebContents();
   DCHECK(contents);
   Browser* browser = chrome::FindBrowserWithWebContents(contents);
   DCHECK(browser);
   return browser;
 }