Add implementation for parsing device info in read/write attribute calls.

device/bluetooth/bluetooth.gyp

 # Copyright 2013 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 182 matching lines @@
                 'dbus/bluetooth_agent_service_provider.cc',
                 'dbus/bluetooth_agent_service_provider.h',
                 'dbus/bluetooth_dbus_client_bundle.cc',
                 'dbus/bluetooth_dbus_client_bundle.h',
                 'dbus/bluetooth_device_client.cc',
                 'dbus/bluetooth_device_client.h',
                 'dbus/bluetooth_gatt_application_service_provider.cc',
                 'dbus/bluetooth_gatt_application_service_provider.h',
                 'dbus/bluetooth_gatt_application_service_provider_impl.cc',
                 'dbus/bluetooth_gatt_application_service_provider_impl.h',
+                'dbus/bluetooth_gatt_attribute_helpers.cc',
+                'dbus/bluetooth_gatt_attribute_helpers.h',
                 'dbus/bluetooth_gatt_attribute_value_delegate.cc',
                 'dbus/bluetooth_gatt_attribute_value_delegate.h',
                 'dbus/bluetooth_gatt_characteristic_client.cc',
                 'dbus/bluetooth_gatt_characteristic_client.h',
                 'dbus/bluetooth_gatt_characteristic_delegate_wrapper.cc',
                 'dbus/bluetooth_gatt_characteristic_delegate_wrapper.h',
                 'dbus/bluetooth_gatt_characteristic_service_provider_impl.cc',
                 'dbus/bluetooth_gatt_characteristic_service_provider_impl.h',
                 'dbus/bluetooth_gatt_characteristic_service_provider.cc',
                 'dbus/bluetooth_gatt_characteristic_service_provider.h',
@@ skipping 247 matching lines @@
           ],
           'variables': {
             'java_in_dir': '../../device/bluetooth/android/java',
           },
           'includes': [ '../../build/java.gypi' ],
         },
       ],
     }],
   ],
 }