chromeos: Remove TrayBubbleView::Delegate::OnBeforeBubbleWidgetInit

ui/message_center/views/message_center_bubble.h

 // 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.
 
 #ifndef UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_BUBBLE_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_BUBBLE_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 15 matching lines @@
   MessageCenterBubble(MessageCenter* message_center, MessageCenterTray* tray);
 
   ~MessageCenterBubble() override;
 
   void SetSettingsVisible();
 
   // Overridden from views::WidgetObserver:
   void OnWidgetClosing(views::Widget* widget) override;
 
   // Overridden from MessageBubbleBase:
-  views::TrayBubbleView::InitParams GetInitParams(
-      views::TrayBubbleView::AnchorAlignment anchor_alignment) override;
   void InitializeContents(views::TrayBubbleView* bubble_view) override;
   void OnBubbleViewDestroyed() override;
   void UpdateBubbleView() override;
   void OnMouseEnteredView() override;
   void OnMouseExitedView() override;
 
   size_t NumMessageViewsForTest() const;
 
  private:
   MessageCenterView* message_center_view_;
 
   // Use settings view as the initially visible content if true.
   bool initially_settings_visible_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterBubble);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_BUBBLE_H_