chromeos: Remove TrayBubbleView::Delegate::OnBeforeBubbleWidgetInit

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 <utility>
 #include <vector>
 
 #include "ash/session/session_controller.h"
@@ skipping 178 matching lines @@
                                 LoginStatus login_status,
                                 TrayBubbleView::InitParams* init_params) {
   DCHECK(anchor);
   DCHECK(!bubble_view_);
 
   if (bubble_type_ == BUBBLE_TYPE_DETAILED &&
       init_params->max_height < GetDetailedBubbleMaxHeight()) {
     init_params->max_height = GetDetailedBubbleMaxHeight();
   }
 
-  bubble_view_ = TrayBubbleView::Create(anchor, tray_, init_params);
+  // Place the bubble on same display as this system tray.
+  bubble_view_ = new TrayBubbleView(tray_->GetBubbleWindowContainer(), anchor,
+                                    tray_, *init_params);
   UpdateBottomPadding();
   bubble_view_->set_adjust_if_offscreen(false);
   CreateItemViews(login_status);
 
   if (bubble_view_->CanActivate()) {
     bubble_view_->NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, true);
   }
 }
 
 void SystemTrayBubble::FocusDefaultIfNeeded() {
@@ skipping 120 matching lines @@
     }
   }
 
   if (focus_view) {
     tray_->ActivateBubble();
     focus_view->RequestFocus();
   }
 }
 
 }  // namespace ash