Add gcm, nfc and bluetooth to GN build.

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': [
     {
+      # GN version: //device/bluetooth
       'target_name': 'device_bluetooth',
       'type': 'static_library',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../../net/net.gyp:net',
         '../../third_party/libxml/libxml.gyp:libxml',
         '../../ui/base/ui_base.gyp:ui_base',
         '../../ui/gfx/gfx.gyp:gfx',
         '../../ui/gfx/gfx.gyp:gfx_geometry',
         'bluetooth_strings.gyp:device_bluetooth_strings',
       ],
       'sources': [
+        # Note: file list duplicated in GN build.
         'bluetooth_adapter.cc',
         'bluetooth_adapter.h',
         'bluetooth_adapter_chromeos.cc',
         'bluetooth_adapter_chromeos.h',
         'bluetooth_adapter_factory.cc',
         'bluetooth_adapter_factory.h',
         'bluetooth_adapter_mac.h',
         'bluetooth_adapter_mac.mm',
         'bluetooth_adapter_win.cc',
         'bluetooth_adapter_win.h',
@@ skipping 85 matching lines @@
         ['OS=="mac"', {
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/IOBluetooth.framework',
             ],
           },
         }],
       ],
     },
     {
+      # GN version: //device/bluetooth:mocks
       'target_name': 'device_bluetooth_mocks',
       'type': 'static_library',
       'dependencies': [
         '../../testing/gmock.gyp:gmock',
         'device_bluetooth',
       ],
       'include_dirs': [
         '../../',
       ],
       'sources': [
+        # Note: file list duplicated in GN build.
         'test/mock_bluetooth_adapter.cc',
         'test/mock_bluetooth_adapter.h',
         'test/mock_bluetooth_device.cc',
         'test/mock_bluetooth_device.h',
         'test/mock_bluetooth_discovery_session.cc',
         'test/mock_bluetooth_discovery_session.h',
         'test/mock_bluetooth_gatt_characteristic.cc',
         'test/mock_bluetooth_gatt_characteristic.h',
         'test/mock_bluetooth_gatt_connection.cc',
         'test/mock_bluetooth_gatt_connection.h',
         'test/mock_bluetooth_gatt_descriptor.cc',
         'test/mock_bluetooth_gatt_descriptor.h',
         'test/mock_bluetooth_gatt_notify_session.cc',
         'test/mock_bluetooth_gatt_notify_session.h',
         'test/mock_bluetooth_gatt_service.cc',
         'test/mock_bluetooth_gatt_service.h',
         'test/mock_bluetooth_socket.cc',
         'test/mock_bluetooth_socket.h',
       ],
     },
   ],
 }