[DeviceService] Add service tests for VibrationManager.

device/vibration/android/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/android/config.gni")
 import("//build/config/android/rules.gni")
 
+generate_jni("vibration_jni_headers") {
+  sources = [
+    "java/src/org/chromium/device/vibration/VibrationManagerImpl.java",
+  ]
+  jni_package = "vibration"
+}
+
 android_library("vibration_manager_java") {
   java_files =
       [ "java/src/org/chromium/device/vibration/VibrationManagerImpl.java" ]
 
   deps = [
     "//base:base_java",
     "//device/vibration:mojo_bindings_java",
     "//mojo/public/java:bindings_java",
     "//mojo/public/java:system_java",
     "//services/service_manager/public/java:service_manager_java",
   ]
 }