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

ash/common/system/tray/system_tray.cc

Index: ash/common/system/tray/system_tray.cc
diff --git a/ash/common/system/tray/system_tray.cc b/ash/common/system/tray/system_tray.cc
index 75a6b093c7e8bcad0b1bfa15c65578d7ce865ab2..d5644870adb1f897662486f85c36eb0f0c14588e 100644
--- a/ash/common/system/tray/system_tray.cc
+++ b/ash/common/system/tray/system_tray.cc
@@ -6,6 +6,7 @@
 
 #include "ash/common/ash_switches.h"
 #include "ash/common/login_status.h"
+#include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/shelf/wm_shelf_util.h"
@@ -627,6 +628,9 @@ void SystemTray::SetShelfAlignment(ShelfAlignment alignment) {
   if (alignment == shelf_alignment())
     return;
   TrayBackgroundView::SetShelfAlignment(alignment);
+  //  if (!ash::MaterialDesignController::IsShelfMaterial())
+  //    AdjustStatusTrayBackground();

[yoshiki, 2016/08/18 08:39:08]

nit: Please remove the unnecessary code.

[yiyix, 2016/08/18 20:01:43]

sorry, I forget to remove these dead codes from my previous versions.

+
   UpdateAfterShelfAlignmentChange(alignment);
   // Destroy any existing bubble so that it is rebuilt correctly.
   CloseSystemBubbleAndDeactivateSystemTray();