chromeos: Remove TrayBubbleView::Delegate::OnBeforeBubbleWidgetInit

ui/message_center/views/message_bubble_base.cc

Index: ui/message_center/views/message_bubble_base.cc
diff --git a/ui/message_center/views/message_bubble_base.cc b/ui/message_center/views/message_bubble_base.cc
index 4089234047b30df575ff0c1133c12d8ff8e8cab4..f3fe0b359e6f2bfa995c552ed60a3be0a7fb36dc 100644
--- a/ui/message_center/views/message_bubble_base.cc
+++ b/ui/message_center/views/message_bubble_base.cc
@@ -8,7 +8,6 @@
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "ui/message_center/message_center_style.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_observer.h"
 
@@ -64,14 +63,4 @@ void MessageBubbleBase::SetMaxHeight(int height) {
     bubble_view_->SetMaxHeight(max_height_);
 }
 
-views::TrayBubbleView::InitParams MessageBubbleBase::GetDefaultInitParams(
-    views::TrayBubbleView::AnchorAlignment anchor_alignment) {
-  views::TrayBubbleView::InitParams init_params(
-      anchor_alignment,
-      kNotificationWidth,
-      kNotificationWidth);
-  init_params.bg_color = kBackgroundDarkColor;
-  return init_params;
-}
-
 }  // namespace message_center