Add views::Button style enum for LabelButton [native] styling, etc.

ash/system/user/tray_user.cc

 // Copyright (c) 2012 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 "ash/system/user/tray_user.h"
 
 #include <algorithm>
 #include <climits>
 #include <vector>
 
@@ skipping 469 matching lines @@
 
   const string16 title = ash::user::GetLocalizedSignOutStringForStatus(login,
                                                                        true);
   TrayPopupLabelButton* logout_button = new TrayPopupLabelButton(this, title);
   logout_button->SetAccessibleName(title);
   logout_button_ = logout_button;
   // In public account mode, the logout button border has a custom color.
   if (login == ash::user::LOGGED_IN_PUBLIC) {
     TrayPopupLabelButtonBorder* border =
         static_cast<TrayPopupLabelButtonBorder*>(logout_button_->border());
-    border->SetPainter(views::CustomButton::STATE_NORMAL,
+    border->SetPainter(views::Button::STATE_NORMAL,
                        views::Painter::CreateImageGridPainter(
                            kPublicAccountLogoutButtonBorderImagesNormal));
-    border->SetPainter(views::CustomButton::STATE_HOVERED,
+    border->SetPainter(views::Button::STATE_HOVERED,
                        views::Painter::CreateImageGridPainter(
                            kPublicAccountLogoutButtonBorderImagesHovered));
-    border->SetPainter(views::CustomButton::STATE_PRESSED,
+    border->SetPainter(views::Button::STATE_PRESSED,
                        views::Painter::CreateImageGridPainter(
                            kPublicAccountLogoutButtonBorderImagesHovered));
   }
   AddChildView(logout_button_);
 }
 
 void UserView::AddUserCard(SystemTrayItem* owner,
                            ash::user::LoginStatus login) {
   if (login == ash::user::LOGGED_IN_GUEST)
     return;
@@ skipping 153 matching lines @@
   // Check for null to avoid crbug.com/150944.
   if (avatar_) {
     avatar_->SetImage(
         ash::Shell::GetInstance()->system_tray_delegate()->GetUserImage(),
         gfx::Size(kUserIconSize, kUserIconSize));
   }
 }
 
 }  // namespace internal
 }  // namespace ash