[reland] MacViews: Allow the toolkit-views Enterprise Signin Confirmation Dialog to be used

chrome/browser/ui/sync/one_click_signin_sync_starter.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/ui/sync/one_click_signin_sync_starter.h"
 
 #include <stddef.h>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 223 matching lines @@
   browser_ = EnsureBrowser(browser_, profile_);
   content::WebContents* web_contents =
       browser_->tab_strip_model()->GetActiveWebContents();
   if (!web_contents) {
     CancelSigninAndDelete();
     return;
   }
 
   content::RecordAction(
       base::UserMetricsAction("Signin_Show_EnterpriseAccountPrompt"));
-  TabDialogs::FromWebContents(web_contents)->ShowProfileSigninConfirmation(
-      browser_,
-      profile_,
-      signin->GetUsernameForAuthInProgress(),
-      new SigninDialogDelegate(weak_pointer_factory_.GetWeakPtr()));
+  TabDialogs::FromWebContents(web_contents)
+      ->ShowProfileSigninConfirmation(browser_, profile_,
+                                      signin->GetUsernameForAuthInProgress(),
+                                      base::MakeUnique<SigninDialogDelegate>(
+                                          weak_pointer_factory_.GetWeakPtr()));
 }
 
 void OneClickSigninSyncStarter::LoadPolicyWithCachedCredentials() {
   DCHECK(!dm_token_.empty());
   DCHECK(!client_id_.empty());
   SigninManager* signin = SigninManagerFactory::GetForProfile(profile_);
   policy::UserPolicySigninService* policy_service =
       policy::UserPolicySigninServiceFactory::GetForProfile(profile_);
   policy_service->FetchPolicyForSignedInUser(
       signin->GetUsernameForAuthInProgress(),
@@ skipping 408 matching lines @@
                                             false /* user_gesture */);
 }
 
 void OneClickSigninSyncStarter::LoadContinueUrl() {
   web_contents()->GetController().LoadURL(
       continue_url_,
       content::Referrer(),
       ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
       std::string());
 }