Remove content::BrowserThread knowledge from Device Sensors

content/browser/device_sensors/device_sensor_host.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 "content/browser/device_sensors/device_sensor_host.h"
 
+#include "base/message_loop/message_loop.h"
+#include "build/build_config.h"
 #include "content/browser/device_sensors/device_sensor_service.h"
-#include "content/public/browser/browser_thread.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
+#if defined(OS_ANDROID)
+#include "content/browser/device_sensors/sensor_manager_android.h"
+#endif
+
 namespace content {
 
 template <typename MojoInterface, ConsumerType consumer_type>
 void DeviceSensorHost<MojoInterface, consumer_type>::Create(
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
     mojo::InterfaceRequest<MojoInterface> request) {
   mojo::MakeStrongBinding(
-      base::WrapUnique(new DeviceSensorHost<MojoInterface, consumer_type>),
+      base::WrapUnique(
+          new DeviceSensorHost<MojoInterface, consumer_type>(ui_task_runner)),
       std::move(request));
 }
 
 template <typename MojoInterface, ConsumerType consumer_type>
-DeviceSensorHost<MojoInterface, consumer_type>::DeviceSensorHost()
-    : is_started_(false) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+DeviceSensorHost<MojoInterface, consumer_type>::DeviceSensorHost(
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner)
+    : is_started_(false), ui_task_runner_(ui_task_runner) {
+  DCHECK(base::MessageLoopForIO::IsCurrent());
 }
 
 template <typename MojoInterface, ConsumerType consumer_type>
 DeviceSensorHost<MojoInterface, consumer_type>::~DeviceSensorHost() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (is_started_)
     DeviceSensorService::GetInstance()->RemoveConsumer(consumer_type);
 }
 
 template <typename MojoInterface, ConsumerType consumer_type>
 void DeviceSensorHost<MojoInterface, consumer_type>::DeviceSensorHost::
     StartPolling(const typename MojoInterface::StartPollingCallback& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!is_started_);
   if (is_started_)
     return;
   is_started_ = true;
+#if defined(OS_ANDROID)
+  SensorManagerAndroid::GetInstance()->SetUITaskRunner(ui_task_runner_);
+#endif
   DeviceSensorService::GetInstance()->AddConsumer(consumer_type);
   callback.Run(
       DeviceSensorService::GetInstance()->GetSharedMemoryHandle(consumer_type));
 }
 
 template <typename MojoInterface, ConsumerType consumer_type>
 void DeviceSensorHost<MojoInterface,
                       consumer_type>::DeviceSensorHost::StopPolling() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(is_started_);
   if (!is_started_)
     return;
   is_started_ = false;
   DeviceSensorService::GetInstance()->RemoveConsumer(consumer_type);
 }
 
 template class DeviceSensorHost<device::mojom::LightSensor,
                                 CONSUMER_TYPE_LIGHT>;
 template class DeviceSensorHost<device::mojom::MotionSensor,
                                 CONSUMER_TYPE_MOTION>;
 template class DeviceSensorHost<device::mojom::OrientationSensor,
                                 CONSUMER_TYPE_ORIENTATION>;
 template class DeviceSensorHost<device::mojom::OrientationAbsoluteSensor,
                                 CONSUMER_TYPE_ORIENTATION_ABSOLUTE>;
 
 }  // namespace content