[DeviceService] Move //device/time_zone_monitor to //services/device

services/device/android/register_jni.cc

+// Copyright (c) 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.
+
+#include "services/device/android/register_jni.h"
+
+#include "base/android/jni_android.h"
+#include "services/device/time_zone_monitor/android/time_zone_monitor_jni_registrar.h"
+
+namespace device {
+
+bool EnsureJniRegistered() {
+  static bool g_jni_init_done = false;
+
+  if (!g_jni_init_done) {
+    JNIEnv* env = base::android::AttachCurrentThread();
+
+    if (!android::RegisterTimeZoneMonitorJni(env))
+      return false;
+
+    g_jni_init_done = true;
+  }
+
+  return true;
+}
+
+}  // namespace device