[cros] Add support for transparent background in sign in screen.

chrome/browser/ui/webui/chromeos/login/oobe_ui.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/webui/chromeos/login/oobe_ui.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/values.h"
 #include "chrome/browser/browser_about_handler.h"
 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h"
+#include "chrome/browser/chromeos/login/base_login_display_host.h"
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h"
 #include "chrome/browser/chromeos/login/screen_locker.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/about_ui.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/core_oobe_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/enterprise_oauth_enrollment_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/update_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/user_image_screen_handler.h"
 #include "chrome/browser/ui/webui/options2/chromeos/user_image_source2.h"
 #include "chrome/browser/ui/webui/theme_source.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "grit/browser_resources.h"
 #include "ui/base/layout.h"
 #include "ui/base/resource/resource_bundle.h"
 
 using content::WebContents;
 
@@ skipping 177 matching lines @@
   // without opening OOBE page.
   NOTREACHED();
   return NULL;
 }
 
 void OobeUI::GetLocalizedStrings(base::DictionaryValue* localized_strings) {
   // Note, handlers_[0] is a GenericHandler used by the WebUI.
   for (size_t i = 0; i < handlers_.size(); ++i)
     handlers_[i]->GetLocalizedStrings(localized_strings);
   ChromeURLDataManager::DataSource::SetFontAndTextDirection(localized_strings);
+
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableNewOobe))
+    localized_strings->SetString("oobeType", "new");
+  else
+    localized_strings->SetString("oobeType", "old");
+
+  // OobeUI is used for OOBE/login and lock screen.
+  if (BaseLoginDisplayHost::default_host())
+    localized_strings->SetString("screenType", "login");
+  else
+    localized_strings->SetString("screenType", "lock");
 }
 
 void OobeUI::AddScreenHandler(BaseScreenHandler* handler) {
   web_ui()->AddMessageHandler(handler);
   handlers_.push_back(handler);
 }
 
 void OobeUI::InitializeHandlers() {
   for (size_t i = 0; i < handlers_.size(); ++i)
     handlers_[i]->InitializeBase();
@@ skipping 10 matching lines @@
 
 void OobeUI::ResetSigninScreenHandlerDelegate() {
   signin_screen_handler_->SetDelegate(NULL);
 }
 
 void OobeUI::OnLoginPromptVisible() {
   user_image_screen_actor_->CheckCameraPresence();
 }
 
 }  // namespace chromeos