Implement signin using webview

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 <string>
 
 #include "base/bind.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 360 matching lines @@
   if (!can_offer) {
     HandleLoginError(error_msg);
     return;
   }
 
   AboutSigninInternals* about_signin_internals =
       AboutSigninInternalsFactory::GetForProfile(Profile::FromWebUI(web_ui()));
   about_signin_internals->OnAuthenticationResultReceived(
       "GAIA Auth Successful");
 
+  GURL partition_url(switches::IsEnableWebviewBasedSignin() ?
+      "chrome-guest://chrome-signin/?" :
+      chrome::kChromeUIChromeSigninURL);
   content::StoragePartition* partition =
       content::BrowserContext::GetStoragePartitionForSite(
-          contents->GetBrowserContext(),
-          GURL(chrome::kChromeUIChromeSigninURL));
+          contents->GetBrowserContext(), partition_url);
 
   SigninClient* signin_client =
       ChromeSigninClientFactory::GetForProfile(Profile::FromWebUI(web_ui()));
   std::string signin_scoped_device_id =
       signin_client->GetSigninScopedDeviceId();
   // InlineSigninHelper will delete itself.
   new InlineSigninHelper(GetWeakPtr(), partition->GetURLRequestContext(),
                          Profile::FromWebUI(web_ui()), current_url,
                          email, password, session_index,
                          signin_scoped_device_id, choose_what_to_sync,
@@ skipping 63 matching lines @@
       }
     }
 
     if (show_account_management) {
       browser->window()->ShowAvatarBubbleFromAvatarButton(
             BrowserWindow::AVATAR_BUBBLE_MODE_ACCOUNT_MANAGEMENT,
             signin::ManageAccountsParams());
     }
   }
 }