Fix issue that closes sync confirm window after second sign-in in one profile.

chrome/browser/ui/webui/signin/inline_login_handler_impl.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/signin/inline_login_handler_impl.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 183 matching lines @@
         true, false, profile_, create_status_);
   } else {
     OnClientOAuthSuccessAndBrowserOpened(result, profile_, create_status_);
   }
 }
 
 void InlineSigninHelper::OnClientOAuthSuccessAndBrowserOpened(
     const ClientOAuthResult& result,
     Profile* profile,
     Profile::CreateStatus status) {
-  UnlockProfileAndHideLoginUI(profile_->GetPath(), handler_.get());
+  if (signin::IsForceSigninEnabled())
+    UnlockProfileAndHideLoginUI(profile_->GetPath(), handler_.get());
   content::WebContents* contents = NULL;
   Browser* browser = NULL;
   if (handler_) {
     contents = handler_->web_ui()->GetWebContents();
     browser = handler_->GetDesktopBrowser();
   }
 
   AboutSigninInternals* about_signin_internals =
       AboutSigninInternalsFactory::GetForProfile(profile_);
   about_signin_internals->OnRefreshTokenReceived("Successful");
@@ skipping 652 matching lines @@
     }
 
     if (show_account_management) {
       browser->window()->ShowAvatarBubbleFromAvatarButton(
           BrowserWindow::AVATAR_BUBBLE_MODE_ACCOUNT_MANAGEMENT,
           signin::ManageAccountsParams(),
           signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN);
     }
   }
 }