mash: Convert WebNotificationTray to wm common types

ui/message_center/views/popup_alignment_delegate.h

 // Copyright 2014 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_POPUP_ALIGNMENT_DELEGATE_H_
 #define UI_MESSAGE_CENTER_VIEWS_POPUP_ALIGNMENT_DELEGATE_H_
 
 #include "ui/message_center/message_center_export.h"
+#include "ui/views/widget/widget.h"
 
 namespace gfx {
 class Point;
 class Rect;
 }
 
 namespace display {
 class Display;
 }
 
@@ skipping 24 matching lines @@
 
   // Returns true if the toasts are positioned at the left side of the desktop
   // so that their reveal animation should happen from left side.
   virtual bool IsFromLeft() const = 0;
 
   // Called when a new toast appears or toasts are rearranged in the |display|.
   // The subclass may override this method to check the current desktop status
   // so that the toasts are arranged at the correct place.
   virtual void RecomputeAlignment(const display::Display& display) = 0;
 
+  // Sets the parent container for popups. If it does not set a parent a
+  // default parent will be used (e.g. the native desktop on Windows).
+  virtual void ConfigureWidgetInitParamsForContainer(
+      views::Widget* widget,
+      views::Widget::InitParams* init_params) = 0;
+
  protected:
   virtual ~PopupAlignmentDelegate();
 
   void DoUpdateIfPossible();
 
  private:
   MessagePopupCollection* collection_;
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_VIEWS_POPUP_ALIGNMENT_DELEGATE_H_