cros: Init SystemTrayDelegate earlier to break bluetooth init dependency

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 18 matching lines @@
 struct IMEInfo;
 struct IMEPropertyInfo;
 
 class CustodianInfoTrayObserver;
 class SystemTray;
 class SystemTrayItem;
 
 using IMEInfoList = std::vector<IMEInfo>;
 using IMEPropertyInfoList = std::vector<IMEPropertyInfo>;
 
-// TODO(jamescook): Move to TrayBluetoothHelper. http://crbug.com/660043
+// TODO(jamescook): Convert TrayBlueooth to use device::BluetoothDevice and
+// delete this. http://crbug.com/660043
 struct ASH_EXPORT BluetoothDeviceInfo {
   BluetoothDeviceInfo();
   BluetoothDeviceInfo(const BluetoothDeviceInfo& other);
   ~BluetoothDeviceInfo();
 
   std::string address;
   base::string16 display_name;
   bool connected;
   bool connecting;
   bool paired;
@@ skipping 148 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_