Revert Aura changes

ash/launcher/tabbed_launcher_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 "ash/launcher/tabbed_launcher_button.h"
 
 #include <algorithm>
 
 #include "ash/launcher/launcher_button_host.h"
 #include "grit/ui_resources.h"
-#include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/animation/multi_animation.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/insets.h"
 
 namespace ash {
 namespace internal {
 
 TabbedLauncherButton::AnimationDelegateImpl::AnimationDelegateImpl(
@@ skipping 134 matching lines @@
 void TabbedLauncherButton::OnMouseMoved(const views::MouseEvent& event) {
   ImageButton::OnMouseMoved(event);
   hover_controller_.SetLocation(event.location());
 }
 
 void TabbedLauncherButton::OnMouseExited(const views::MouseEvent& event) {
   ImageButton::OnMouseExited(event);
   hover_controller_.Hide();
 }
 
-void TabbedLauncherButton::GetAccessibleState(ui::AccessibleViewState* state) {
-  state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
-  state->name = host_->GetAccessibleName(this);
-}
-
 // static
 TabbedLauncherButton::ImageSet* TabbedLauncherButton::CreateImageSet(
     int normal_id,
     int pushed_id,
     int hot_id) {
   ImageSet* set = new ImageSet;
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   set->normal_image = new SkBitmap(*rb.GetImageNamed(normal_id).ToSkBitmap());
   set->pushed_image = new SkBitmap(*rb.GetImageNamed(pushed_id).ToSkBitmap());
   set->hot_image = new SkBitmap(*rb.GetImageNamed(hot_id).ToSkBitmap());
   return set;
 }
 
 }  // namespace internal
 }  // namespace ash