CustomButton cleanup: make protected members private, create accessors

ui/views/controls/button/label_button.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 "ui/views/controls/button/label_button.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 480 matching lines @@
     case STATE_NORMAL:   return ui::NativeTheme::kNormal;
     case STATE_HOVERED:  return ui::NativeTheme::kHovered;
     case STATE_PRESSED:  return ui::NativeTheme::kPressed;
     case STATE_DISABLED: return ui::NativeTheme::kDisabled;
     case STATE_COUNT:    NOTREACHED() << "Unknown state: " << state();
   }
   return ui::NativeTheme::kNormal;
 }
 
 const gfx::Animation* LabelButton::GetThemeAnimation() const {
-  return hover_animation_.get();
+  return &hover_animation();
 }
 
 ui::NativeTheme::State LabelButton::GetBackgroundThemeState(
     ui::NativeTheme::ExtraParams* params) const {
   GetExtraParams(params);
   return ui::NativeTheme::kNormal;
 }
 
 ui::NativeTheme::State LabelButton::GetForegroundThemeState(
     ui::NativeTheme::ExtraParams* params) const {
   GetExtraParams(params);
   return ui::NativeTheme::kHovered;
 }
 
 void LabelButton::ResetCachedPreferredSize() {
   cached_preferred_size_valid_ = false;
   cached_preferred_size_ = gfx::Size();
 }
 
 }  // namespace views