Updates to icons for Ash material design system tray

ash/common/system/tray/tray_item_more.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/system/tray/tray_item_more.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/system/tray/fixed_sized_image_view.h"
 #include "ash/common/system/tray/system_tray_item.h"
 #include "ash/common/system/tray/tray_constants.h"
@@ skipping 42 matching lines @@
 }
 
 TrayItemMore::~TrayItemMore() {}
 
 void TrayItemMore::SetLabel(const base::string16& label) {
   label_->SetText(label);
   Layout();
   SchedulePaint();
 }
 
-void TrayItemMore::SetImage(const gfx::ImageSkia* image_skia) {
+void TrayItemMore::SetImage(const gfx::ImageSkia& image_skia) {
   icon_->SetImage(image_skia);
   SchedulePaint();
 }
 
 void TrayItemMore::SetAccessibleName(const base::string16& name) {
   accessible_name_ = name;
 }
 
 void TrayItemMore::ReplaceIcon(views::View* view) {
   delete icon_;
@@ skipping 32 matching lines @@
   }
 }
 
 void TrayItemMore::GetAccessibleState(ui::AXViewState* state) {
   ActionableView::GetAccessibleState(state);
   if (!accessible_name_.empty())
     state->name = accessible_name_;
 }
 
 }  // namespace ash