[Chrome OS MD] Draw a 1px separator between 2 tray items

ash/common/shelf/wm_shelf.cc

Index: ash/common/shelf/wm_shelf.cc
diff --git a/ash/common/shelf/wm_shelf.cc b/ash/common/shelf/wm_shelf.cc
index 5ffbd4058ef9981a0efe0e91f8e97c05fd63cf64..946dafaf5504467de6fac873f89afe743d1fb80e 100644
--- a/ash/common/shelf/wm_shelf.cc
+++ b/ash/common/shelf/wm_shelf.cc
@@ -161,6 +161,10 @@ void WmShelf::NotifyShelfIconPositionsChanged() {
   FOR_EACH_OBSERVER(WmShelfObserver, observers_, OnShelfIconPositionsChanged());
 }
 
+StatusAreaWidget* WmShelf::GetStatusAreaWidget() const {
+  return shelf_layout_manager_->shelf_widget()->status_area_widget();
+}
+
 void WmShelf::SetVirtualKeyboardBoundsForTesting(const gfx::Rect& bounds) {
   shelf_layout_manager_->OnKeyboardBoundsChanging(bounds);
 }