Do not hide the web notification popups by the system tray, rather let them avoid (2nd)

ash/system/status_area_widget.cc

Index: ash/system/status_area_widget.cc
diff --git a/ash/system/status_area_widget.cc b/ash/system/status_area_widget.cc
index d6ba12829d4cb09f8e27c24cc0f7713242400b85..147251c6f5264a71a8f4adc1a1acf1be2459adbe 100644
--- a/ash/system/status_area_widget.cc
+++ b/ash/system/status_area_widget.cc
@@ -116,11 +116,6 @@ void StatusAreaWidget::SetShelfAlignment(ShelfAlignment alignment) {
   status_area_widget_delegate_->UpdateLayout();
 }
 
-void StatusAreaWidget::SetHideWebNotifications(bool hide) {
-  if (web_notification_tray_)
-    web_notification_tray_->SetHidePopupBubble(hide);
-}
-
 void StatusAreaWidget::SetHideSystemNotifications(bool hide) {
   if (system_tray_)
     system_tray_->SetHideNotifications(hide);