Update profile switcher button on Linux.

chrome/browser/ui/views/profiles/new_avatar_button.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_VIEWS_PROFILES_NEW_AVATAR_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_PROFILES_NEW_AVATAR_BUTTON_H_
 
 #include "base/macros.h"
 #include "chrome/browser/profiles/profile_attributes_storage.h"
 #include "chrome/browser/ui/avatar_button_error_controller.h"
 #include "chrome/browser/ui/avatar_button_error_controller_delegate.h"
 #include "chrome/browser/ui/views/profiles/avatar_button_style.h"
 #include "ui/views/controls/button/label_button.h"
+#include "ui/views/widget/widget_observer.h"
 
 class AvatarButtonDelegate;
 class Profile;
 
 // Avatar button that displays the active profile's name in the caption area.
 class NewAvatarButton : public views::LabelButton,
                         public AvatarButtonErrorControllerDelegate,
-                        public ProfileAttributesStorage::Observer {
+                        public ProfileAttributesStorage::Observer,
+                        public views::WidgetObserver {
  public:
   NewAvatarButton(AvatarButtonDelegate* delegate,
                   AvatarButtonStyle button_style,
                   Profile* profile);
   ~NewAvatarButton() override;
 
-  // Views::LabelButton
+  // views::LabelButton
   bool OnMousePressed(const ui::MouseEvent& event) override;
   void OnMouseReleased(const ui::MouseEvent& event) override;
-
-  // Views
   void OnGestureEvent(ui::GestureEvent* event) override;
+  SkColor GetInkDropBaseColor() const override;
+  std::unique_ptr<views::InkDropMask> CreateInkDropMask() const override;
+  void NotifyClick(const ui::Event& event) override;
 
  private:
   friend class ProfileChooserViewExtensionsTest;
 
   // AvatarButtonErrorControllerDelegate:
   void OnAvatarErrorChanged() override;
 
   // ProfileAttributesStorage::Observer:
   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 OnProfileSupervisedUserIdChanged(
       const base::FilePath& profile_path) override;
 
+  // views::WidgetObserver
+  void OnWidgetClosing(views::Widget* widget) override;

[Peter Kasting, 2017/04/27 02:13:18]

Nit: Per recent chromium-dev discussion, make overrides have same visibility as
in original class

(Though in this case the best way to do that would be to also make the methods
above be public)

+
   // Called when the profile info cache or signin/sync error has changed, which
   // means we might have to update the icon/text of the button.
   void Update();
 
   AvatarButtonDelegate* delegate_;
   AvatarButtonErrorController error_controller_;
   Profile* profile_;
 
   // The icon displayed instead of the profile name in the local profile case.
   // Different assets are used depending on the OS version.
   gfx::ImageSkia generic_avatar_;
 
   // This is used to check if the bubble was showing during the mouse pressed
   // event. If this is true then the mouse released event is ignored to prevent
   // the bubble from reshowing.
   bool suppress_mouse_released_action_;
 
   DISALLOW_COPY_AND_ASSIGN(NewAvatarButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_NEW_AVATAR_BUTTON_H_