Add gcm, nfc and bluetooth to GN build.

device/nfc/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.
+
+static_library("nfc") {
+  sources = [
+    "nfc_adapter.cc",
+    "nfc_adapter.h",
+    "nfc_adapter_chromeos.cc",
+    "nfc_adapter_chromeos.h",
+    "nfc_adapter_factory.cc",
+    "nfc_adapter_factory.h",
+    "nfc_ndef_record.cc",
+    "nfc_ndef_record.h",
+    "nfc_ndef_record_utils_chromeos.cc",
+    "nfc_ndef_record_utils_chromeos.h",
+    "nfc_peer.cc",
+    "nfc_peer.h",
+    "nfc_peer_chromeos.cc",
+    "nfc_peer_chromeos.h",
+    "nfc_tag.cc",
+    "nfc_tag.h",
+    "nfc_tag_chromeos.cc",
+    "nfc_tag_chromeos.h",
+    "nfc_tag_technology.cc",
+    "nfc_tag_technology.h",
+    "nfc_tag_technology_chromeos.cc",
+    "nfc_tag_technology_chromeos.h"
+  ]
+
+  deps = [
+    "//base",
+    "//url",
+  ]
+
+  if (is_chromeos) {
+    deps += [
+      "//dbus",
+      #'../../chromeos/chromeos.gyp:chromeos',  TODO(GYP)
+    ]
+  }
+}