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

ash/aura/wm_shelf_aura.cc

Index: ash/aura/wm_shelf_aura.cc
diff --git a/ash/aura/wm_shelf_aura.cc b/ash/aura/wm_shelf_aura.cc
index 25e60bb97e701f4870688b49844fa1b4b872f018..36daba94387a64c185c2b432e42da1aee48230df 100644
--- a/ash/aura/wm_shelf_aura.cc
+++ b/ash/aura/wm_shelf_aura.cc
@@ -185,6 +185,10 @@ void WmShelfAura::RemoveObserver(WmShelfObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+StatusAreaWidget* WmShelfAura::GetStatusAreaWidget() {
+  return shelf_layout_manager_->shelf_widget()->status_area_widget();
+}
+
 void WmShelfAura::SetKeyboardBoundsForTesting(const gfx::Rect& bounds) {
   shelf_layout_manager_->OnKeyboardBoundsChanging(bounds);
 }