Cleanup: remove NotifyAccessibilityEvent from views::Widget.

ash/system/tray/system_tray_bubble.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/tray/system_tray_bubble.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_item.h"
@@ skipping 246 matching lines @@
     init_params->max_height = kDetailedBubbleMaxHeight;
   } else if (bubble_type_ == BUBBLE_TYPE_NOTIFICATION) {
     init_params->close_on_deactivate = false;
   }
   bubble_view_ = TrayBubbleView::Create(
       tray_->GetBubbleWindowContainer(), anchor, tray_, init_params);
   bubble_view_->set_adjust_if_offscreen(false);
   CreateItemViews(login_status);
 
   if (bubble_view_->CanActivate()) {
-    bubble_view_->GetWidget()->NotifyAccessibilityEvent(
-        bubble_view_, ui::AccessibilityTypes::EVENT_ALERT, true);
+    bubble_view_->NotifyAccessibilityEvent(
+        ui::AccessibilityTypes::EVENT_ALERT, true);
   }
 }
 
 void SystemTrayBubble::DestroyItemViews() {
   for (std::vector<ash::SystemTrayItem*>::iterator it = items_.begin();
        it != items_.end();
        ++it) {
     switch (bubble_type_) {
       case BUBBLE_TYPE_DEFAULT:
         (*it)->DestroyDefaultView();
@@ skipping 83 matching lines @@
     // For default view, draw bottom border for each item, except the last
     // 2 items, which are the bottom header row and the one just above it.
     bubble_view_->AddChildView(new TrayPopupItemContainer(
         item_views[i], is_default_bubble,
         is_default_bubble && (i < item_views.size() - 2)));
   }
 }
 
 }  // namespace internal
 }  // namespace ash