ui::LocatedEvent location() returns gfx::PointF

ui/message_center/views/message_center_view.cc

 // Copyright (c) 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 "ui/message_center/views/message_center_view.h"
 
 #include <list>
 #include <map>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 790 matching lines @@
     content_height += settings_view_->GetHeightForWidth(width);
   return button_bar_->GetHeightForWidth(width) +
          button_bar_->GetInsets().height() + content_height;
 }
 
 bool MessageCenterView::OnMouseWheel(const ui::MouseWheelEvent& event) {
   // Do not rely on the default scroll event handler of ScrollView because
   // the scroll happens only when the focus is on the ScrollView. The
   // notification center will allow the scrolling even when the focus is on
   // the buttons.
-  if (scroller_->bounds().Contains(event.location()))
+  if (scroller_->bounds().Contains(gfx::ToFlooredPoint(event.location())))
     return scroller_->OnMouseWheel(event);
   return views::View::OnMouseWheel(event);
 }
 
 void MessageCenterView::OnMouseExited(const ui::MouseEvent& event) {
   if (is_closing_)
     return;
 
   message_list_view_->ResetRepositionSession();
   NotificationsChanged();
@@ skipping 180 matching lines @@
   scroller_->InvalidateLayout();
   PreferredSizeChanged();
   Layout();
 }
 
 void MessageCenterView::SetNotificationViewForTest(MessageView* view) {
   message_list_view_->AddNotificationAt(view, 0);
 }
 
 }  // namespace message_center