Adjust positioning of cros tray bubbles.

ash/common/system/tray/system_tray_bubble.cc

Index: ash/common/system/tray/system_tray_bubble.cc
diff --git a/ash/common/system/tray/system_tray_bubble.cc b/ash/common/system/tray/system_tray_bubble.cc
index bc1c90f5b42fe40898ff0df9d20e8313970fb090..19ad2675024d890e74eef4e4587567262c69f941 100644
--- a/ash/common/system/tray/system_tray_bubble.cc
+++ b/ash/common/system/tray/system_tray_bubble.cc
@@ -195,8 +195,7 @@ void SystemTrayBubble::InitView(views::View* anchor,
   } else if (bubble_type_ == BUBBLE_TYPE_NOTIFICATION) {
     init_params->close_on_deactivate = false;
   }
-  // The TrayBubbleView will use |anchor| and |tray_| to determine the parent
-  // container for the bubble.
+
   bubble_view_ = TrayBubbleView::Create(anchor, tray_, init_params);
   bubble_view_->set_adjust_if_offscreen(false);
   CreateItemViews(login_status);