Revert of Refactor the avatar button/icon class

chrome/browser/ui/views/profiles/avatar_base_button.h

-// Copyright 2015 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_VIEWS_PROFILES_AVATAR_BASE_BUTTON_H_
-#define CHROME_BROWSER_UI_VIEWS_PROFILES_AVATAR_BASE_BUTTON_H_
-
-#include "chrome/browser/profiles/profile_info_cache_observer.h"
-
-class Browser;
-
-// This view manages the button that sits in the top of the window frame and
-// displays the active profile's info when using multi-profiles.
-class AvatarBaseButton : public ProfileInfoCacheObserver {
- public:
-  explicit AvatarBaseButton(Browser* browser);
-  ~AvatarBaseButton() override;
-
- protected:
-  Browser* browser() const { return browser_; }
-
-  // Called when the profile info cache has changed, which means we might
-  // have to update the icon/text of the button.
-  virtual void Update() = 0;
-
- private:
-  // ProfileInfoCacheObserver:
-  void OnProfileAdded(const base::FilePath& profile_path) override;
-  void OnProfileWasRemoved(const base::FilePath& profile_path,
-                           const base::string16& profile_name) override;
-  void OnProfileNameChanged(const base::FilePath& profile_path,
-                            const base::string16& old_profile_name) override;
-  void OnProfileAvatarChanged(const base::FilePath& profile_path) override;
-  void OnProfileSupervisedUserIdChanged(
-      const base::FilePath& profile_path) override;
-
-  Browser* browser_;
-
-  DISALLOW_COPY_AND_ASSIGN(AvatarBaseButton);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_AVATAR_BASE_BUTTON_H_