Remove need to sign in to use the App Launcher.

ui/app_list/views/signin_view.h

-// 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.
-
-#ifndef UI_APP_LIST_VIEWS_SIGNIN_VIEW_H_
-#define UI_APP_LIST_VIEWS_SIGNIN_VIEW_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/views/controls/button/button.h"
-#include "ui/views/controls/link_listener.h"
-#include "ui/views/view.h"
-
-namespace app_list {
-
-class SigninDelegate;
-
-// The SigninView is shown in the app list when the user needs to sign in.
-class SigninView : public views::View,
-                   public views::ButtonListener,
-                   public views::LinkListener {
- public:
-  SigninView(SigninDelegate* delegate, int width);
-  virtual ~SigninView();
-
- private:
-  // views::ButtonListener overrides:
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) OVERRIDE;
-
-  // views::LinkListener overrides:
-  virtual void LinkClicked(views::Link* source, int event_flags) OVERRIDE;
-
-  views::Link* learn_more_link_;
-  views::Link* settings_link_;
-
-  SigninDelegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(SigninView);
-};
-
-}  // namespace app_list
-
-#endif  // UI_APP_LIST_VIEWS_SIGNIN_VIEW_H_