Move tray code from ui/chromeos/network/

ash/common/material_design/material_design_controller.cc

Index: ash/common/material_design/material_design_controller.cc
diff --git a/ash/common/material_design/material_design_controller.cc b/ash/common/material_design/material_design_controller.cc
index a2c8607d599910686f91c1a9c7f621141ceed04c..918e3f82fe147bc00284ba1a40aab4a1ec5c54bc 100644
--- a/ash/common/material_design/material_design_controller.cc
+++ b/ash/common/material_design/material_design_controller.cc
@@ -10,10 +10,6 @@
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 
-#if defined(OS_CHROMEOS)
-#include "ui/chromeos/material_design_icon_controller.h"
-#endif  // OS_CHROMEOS
-
 namespace ash {
 
 namespace {
@@ -44,11 +40,6 @@ void MaterialDesignController::Initialize() {
     }
     SetMode(DefaultMode());
   }
-
-#if defined(OS_CHROMEOS)
-  ui::md_icon_controller::SetUseMaterialDesignNetworkIcons(
-      UseMaterialDesignSystemIcons());
-#endif  // OS_CHROMEOS
 }
 
 // static