Revert of Refactor the avatar button/icon class

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

-// 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.
-
-#include "chrome/browser/ui/views/profiles/avatar_base_button.h"
-
-#include "base/files/file_path.h"
-#include "base/strings/string16.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/browser/ui/browser.h"
-#include "components/signin/core/common/profile_management_switches.h"
-
-AvatarBaseButton::AvatarBaseButton(Browser* browser)
-    : browser_(browser) {
-  // |profile_manager| might be null in tests.
-  ProfileManager* profile_manager = g_browser_process->profile_manager();
-  if (profile_manager)
-    profile_manager->GetProfileInfoCache().AddObserver(this);
-}
-
-AvatarBaseButton::~AvatarBaseButton() {
-  // |profile_manager| might be null in tests.
-  ProfileManager* profile_manager = g_browser_process->profile_manager();
-  if (profile_manager)
-    profile_manager->GetProfileInfoCache().RemoveObserver(this);
-}
-
-void AvatarBaseButton::OnProfileAdded(const base::FilePath& profile_path) {
-  Update();
-}
-
-void AvatarBaseButton::OnProfileWasRemoved(
-      const base::FilePath& profile_path,
-      const base::string16& profile_name) {
-  // If deleting the active profile, don't bother updating the avatar
-  // button, as the browser window is being closed anyway.
-  if (browser_->profile()->GetPath() != profile_path)
-    Update();
-}
-
-void AvatarBaseButton::OnProfileNameChanged(
-      const base::FilePath& profile_path,
-      const base::string16& old_profile_name) {
-  if (browser_->profile()->GetPath() == profile_path)
-    Update();
-}
-
-void AvatarBaseButton::OnProfileAvatarChanged(
-      const base::FilePath& profile_path) {
-  if (!switches::IsNewAvatarMenu() &&
-      browser_->profile()->GetPath() == profile_path)
-    Update();
-}
-
-void AvatarBaseButton::OnProfileSupervisedUserIdChanged(
-      const base::FilePath& profile_path) {
-  if (browser_->profile()->GetPath() == profile_path)
-    Update();
-}