Cleanup: remove NotifyAccessibilityEvent from views::Widget.

ui/views/controls/button/custom_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/custom_button.h"
 
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/animation/throb_animation.h"
 #include "ui/base/events/event.h"
 #include "ui/base/keycodes/keyboard_codes.h"
@@ skipping 66 matching lines @@
   gfx::Point cursor_pos(gfx::Screen::GetScreenFor(
       GetWidget()->GetNativeView())->GetCursorScreenPoint());
   ConvertPointToTarget(NULL, this, &cursor_pos);
   return HitTestPoint(cursor_pos);
 }
 
 void CustomButton::SetHotTracked(bool is_hot_tracked) {
   if (state_ != STATE_DISABLED)
     SetState(is_hot_tracked ? STATE_HOVERED : STATE_NORMAL);
 
-  if (is_hot_tracked && GetWidget()) {
-    GetWidget()->NotifyAccessibilityEvent(
-        this, ui::AccessibilityTypes::EVENT_FOCUS, true);
-  }
+  if (is_hot_tracked)
+    NotifyAccessibilityEvent(ui::AccessibilityTypes::EVENT_FOCUS, true);
 }
 
 bool CustomButton::IsHotTracked() const {
   return state_ == STATE_HOVERED;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // CustomButton, View overrides:
 
 void CustomButton::OnEnabledChanged() {
@@ skipping 232 matching lines @@
   if (!is_add && state_ != STATE_DISABLED)
     SetState(STATE_NORMAL);
 }
 
 void CustomButton::OnBlur() {
   if (IsHotTracked())
     SetState(STATE_NORMAL);
 }
 
 }  // namespace views