[sensors] Introduce Generic Sensor API interfaces

device/sensors/sensor_service.cc

+// Copyright 2016 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 "device/sensors/sensor_service.h"
+
+#include <utility>
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/single_thread_task_runner.h"
+#include "device/sensors/sensor_provider_impl.h"
+
+namespace device {
+
+// static
+void SensorService::BindRequest(
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+    mojo::InterfaceRequest<mojom::SensorProvider> request) {
+  task_runner->PostTask(FROM_HERE, base::Bind(mojom::SensorProviderImpl::Create,

[Reilly Grant (use Gerrit), 2016/07/27 22:07:58]

What is the purpose of posting a task here?

[Mikhail, 2016/08/09 19:38:28]

We want to move the notification from the sensors out of the main thread.

+                                              base::Passed(&request)));
+}
+
+}  // namespace device