Removes unnecessary views::Widget::InitParams::top_level

chrome/browser/ui/views/message_center/message_center_widget_delegate.cc

 // Copyright 2013 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 "chrome/browser/ui/views/message_center/message_center_widget_delegate.h"
 
 #include <complex>
 
 #include "chrome/browser/ui/views/message_center/message_center_frame_view.h"
 #include "chrome/browser/ui/views/message_center/web_notification_tray.h"
@@ skipping 124 matching lines @@
   tray_->SendHideMessageCenter();
   return true;
 }
 
 void MessageCenterWidgetDelegate::InitWidget() {
   views::Widget* widget = new views::Widget();
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_BUBBLE);
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.delegate = this;
   params.keep_on_top = true;
-  params.top_level = true;
 #if defined(USE_ASH)
   // This class is not used in Ash; there is another container for the message
   // center that's used there.  So, we must be in a Views + Ash environment.  We
   // want the notification center to be available on both desktops.  Setting the
   // |native_widget| variable here ensures that the widget is hosted on the
   // native desktop.
   params.native_widget = new views::DesktopNativeWidgetAura(widget);
 #endif
   widget->Init(params);
 
@@ skipping 79 matching lines @@
     bounds.set_y(corrected_anchor.y() - size.height());
   if (pos_info_.message_center_alignment & ALIGNMENT_LEFT)
     bounds.set_x(corrected_anchor.x());
   if (pos_info_.message_center_alignment & ALIGNMENT_RIGHT)
     bounds.set_x(corrected_anchor.x() - size.width());
 
   return bounds;
 }
 
 }  // namespace message_center