Port BatteryMonitor into Device Service

services/device/android/java/src/org/chromium/services/device/InterfaceRegistrar.java

+// Copyright 2016 The Chromium Authors. All rights reserved.

[Sam McNally, 2017/01/25 05:53:06]

2017

[blundell, 2017/01/25 15:00:34]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.device_service;
+
+import android.content.Context;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.device.BatteryMonitor;
+import org.chromium.device.battery.BatteryMonitorFactory;
+import org.chromium.mojo.system.impl.CoreImpl;
+import org.chromium.services.service_manager.InterfaceRegistry;
+
+@JNINamespace("device")
+class InterfaceRegistrar {
+    @CalledByNative
+    static InterfaceRegistry createInterfaceRegistryForContext(

[Sam McNally, 2017/01/25 05:53:06]

Return void.

[blundell, 2017/01/25 15:00:34]

Done.

+            int nativeHandle, Context applicationContext) {
+        InterfaceRegistry registry = InterfaceRegistry.create(
+                CoreImpl.getInstance().acquireNativeHandle(nativeHandle).toMessagePipeHandle());
+        registry.addInterface(
+                BatteryMonitor.MANAGER, new BatteryMonitorFactory(applicationContext));

[blundell, 2017/01/24 11:35:43]

I originally thought I would generalize this code into a library available to
all services. However, there's so little code here that attempting to generalize
it seems like it would result in more or less the same amount of code
per-service to register that particular service's Java interfaces.

+        return registry;
+    }
+}