cros: Move call js prefix out of ctor.

chrome/browser/ui/webui/chromeos/login/device_disabled_screen_handler.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_DEVICE_DISABLED_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_DEVICE_DISABLED_SCREEN_HANDLER_H_
 
 #include "base/macros.h"
 #include "chrome/browser/chromeos/login/screens/device_disabled_screen_actor.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
@@ skipping 15 matching lines @@
 
   // BaseScreenHandler:
   void DeclareLocalizedValues(
       ::login::LocalizedValuesBuilder* builder) override;
   void Initialize() override;
 
  private:
   // WebUIMessageHandler:
   void RegisterMessages() override;
 
-  Delegate* delegate_;
+  Delegate* delegate_ = nullptr;
 
   // Indicates whether the screen should be shown right after initialization.
-  bool show_on_init_;
+  bool show_on_init_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceDisabledScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_DEVICE_DISABLED_SCREEN_HANDLER_H_