Add bluetooth device type icons on MD system tray.

ash/common/system/tray/system_tray_delegate.h

 // 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.
 
 #ifndef ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_DELEGATE_H_
 #define ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_DELEGATE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 37 matching lines @@
   bool tray_icon_visible;
   gfx::ImageSkia image;
   base::string16 name;
   base::string16 description;
   std::string service_path;
   bool is_cellular;
 };
 
 struct ASH_EXPORT BluetoothDeviceInfo {
   BluetoothDeviceInfo();
+  BluetoothDeviceInfo(const BluetoothDeviceInfo& other);
   ~BluetoothDeviceInfo();
 
   std::string address;
   base::string16 display_name;
+  gfx::ImageSkia icon_image;
   bool connected;
   bool connecting;
   bool paired;
 };
 
 using BluetoothDeviceList = std::vector<BluetoothDeviceInfo>;
 
 struct ASH_EXPORT UpdateInfo {
   enum UpdateSeverity {
     UPDATE_NONE,
@@ skipping 247 matching lines @@
   // Creates a system tray item for display rotation lock.
   // TODO(jamescook): Remove this when mus has support for display management
   // and we have a DisplayManager equivalent. See http://crbug.com/548429
   virtual std::unique_ptr<SystemTrayItem> CreateRotationLockTrayItem(
       SystemTray* tray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_DELEGATE_H_