[Device Service] Decouple NFC implementation from //content

device/nfc/public/java/BUILD.gn

Index: device/nfc/public/java/BUILD.gn
diff --git a/device/nfc/public/java/BUILD.gn b/device/nfc/public/java/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..f062c6cf1d117aa6dcb89000868128f109fcdd62
--- /dev/null
+++ b/device/nfc/public/java/BUILD.gn
@@ -0,0 +1,12 @@
+# Copyright 2017 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/android/rules.gni")
+
+android_library("nfc_java") {
+  java_files = [ "src/org/chromium/device/nfc/NfcDelegate.java" ]
+  deps = [
+    "//base:base_java",
+  ]
+}