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

device/bluetooth/BUILD.gn

 # Copyright 2014 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.
 import("//build/config/features.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")  # For generate_jni().
 }
 
 config("bluetooth_config") {
@@ skipping 211 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.cc",
         "dbus/bluetooth_gatt_characteristic_service_provider.h",
         "dbus/bluetooth_gatt_characteristic_service_provider_impl.cc",
         "dbus/bluetooth_gatt_characteristic_service_provider_impl.h",
@@ skipping 142 matching lines @@
     jni_package = "bluetooth"
   }
 
   android_library("java") {
     java_files = java_sources_needing_jni
     deps = [
       "//base:base_java",
     ]
   }
 }