Apply MD style to Linux avatar buttons.

chrome/browser/ui/views/profiles/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_AVATAR_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_PROFILES_AVATAR_BUTTON_H_
 
 #include "base/macros.h"
 #include "base/scoped_observer.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 Profile;
 
 // Base class for avatar buttons that display the active profile's name in the
 // caption area.
 class AvatarButton : public views::LabelButton,
                      public AvatarButtonErrorControllerDelegate,
-                     public ProfileAttributesStorage::Observer {
+                     public ProfileAttributesStorage::Observer,
+                     public views::WidgetObserver {
  public:
   AvatarButton(views::ButtonListener* listener,
                AvatarButtonStyle button_style,
                Profile* profile);
   ~AvatarButton() override;
 
   // views::LabelButton:
   void OnGestureEvent(ui::GestureEvent* event) override;
   gfx::Size GetMinimumSize() const override;
   gfx::Size GetPreferredSize() const override;
   std::unique_ptr<views::InkDropHighlight> CreateInkDropHighlight()
       const override;
+  std::unique_ptr<views::InkDropMask> CreateInkDropMask() const override;
+  void NotifyClick(const ui::Event& event) override;
 
  protected:
   // views::LabelButton:
   bool ShouldUseFloodFillInkDrop() const 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

[Peter Kasting, 2017/05/15 21:51:28]

Nit: Trailing colon

+  void OnWidgetClosing(views::Widget* widget) override;
+
   // 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();
 
   // Sets generic_avatar_ to the image with the specified IDR.
   void SetButtonAvatar(int avatar_idr);
 
+  // Returns true when the button can get smaller to accomodate a more crowded
+  // browser frame.
+  bool IsCondensible() const;
+
   AvatarButtonErrorController error_controller_;
   Profile* profile_;
   ScopedObserver<ProfileAttributesStorage, AvatarButton> profile_observer_;
 
   // 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_;
 
-  // True to use the Windows 10 native (non-themed) button, which is drawn using
-  // a vector icon and can change height to slide atop the tabstrip. False to
-  // use the old PNG, fixed-size icon button or a themed button.
-  bool use_win10_native_button_;
+  AvatarButtonStyle button_style_;
 
   DISALLOW_COPY_AND_ASSIGN(AvatarButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_AVATAR_BUTTON_H_