[webnfc] Implement watch method for Android nfc mojo service.

device/BUILD.gn

 # Copyright 2015 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")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")  # For generate_jni().
 }
@@ skipping 261 matching lines @@
       "//third_party/android_tools:android_support_annotations_java",
     ]
 
     srcjar_deps = [ ":bluetooth_test_javagen" ]
   }
 
   junit_binary("device_junit_tests") {
     java_files = [
       "gamepad/android/junit/src/org/chromium/device/gamepad/GamepadMappingsTest.java",
       "generic_sensor/android/junit/src/org/chromium/device/sensors/PlatformSensorAndProviderTest.java",
+      "nfc/android/junit/src/org/chromium/device/nfc/NFCTest.java",
     ]
     deps = [
       "//base:base_java",
       "//base:base_java_test_support",
       "//device/gamepad:java",
       "//device/generic_sensor:java",
       "//device/generic_sensor/public/interfaces:interfaces_java",
+      "//device/nfc:mojo_bindings_java",
+      "//device/nfc/android:java",
+      "//mojo/public/java:bindings_java",
       "//third_party/android_tools:android_support_annotations_java",
     ]
     srcjar_deps = [ "//device/gamepad:java_enums_srcjar" ]
   }
 
   java_cpp_enum("bluetooth_test_javagen") {
     sources = [
       "bluetooth/test/bluetooth_test.h",
     ]
   }
 }