Remove content::BrowserThread knowledge from Device Sensors

content/browser/device_sensors/device_sensor_service.cc

Index: content/browser/device_sensors/device_sensor_service.cc
diff --git a/content/browser/device_sensors/device_sensor_service.cc b/content/browser/device_sensors/device_sensor_service.cc
index 827600740f7c4bf3355020a3fbe8c85e782f53ee..3f34fa9204b11cf07208fb8b1983b8ff3ea13652 100644
--- a/content/browser/device_sensors/device_sensor_service.cc
+++ b/content/browser/device_sensors/device_sensor_service.cc
@@ -46,7 +46,7 @@ void DeviceSensorService::RemoveConsumer(ConsumerType consumer_type) {
 
 bool DeviceSensorService::ChangeNumberConsumers(ConsumerType consumer_type,
                                                 int delta) {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK(io_thread_checker_.CalledOnValidThread());
   if (is_shutdown_)
     return false;
 
@@ -91,13 +91,13 @@ int DeviceSensorService::GetNumberConsumers(ConsumerType consumer_type) const {
 
 mojo::ScopedSharedBufferHandle DeviceSensorService::GetSharedMemoryHandle(
     ConsumerType consumer_type) {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK(io_thread_checker_.CalledOnValidThread());
   return data_fetcher_->GetSharedMemoryHandle(consumer_type);
 }
 
-void DeviceSensorService::Shutdown() {
+void DeviceSensorService::ShutDownOnUIThread() {
   if (data_fetcher_) {
-    data_fetcher_->Shutdown();
+    data_fetcher_->ShutDownOnUIThread();
     data_fetcher_.reset();
   }
   is_shutdown_ = true;
@@ -106,7 +106,7 @@ void DeviceSensorService::Shutdown() {
 void DeviceSensorService::SetDataFetcherForTesting(
     DataFetcherSharedMemory* test_data_fetcher) {
   if (data_fetcher_)
-    data_fetcher_->Shutdown();
+    data_fetcher_->ShutDownOnUIThread();
   data_fetcher_.reset(test_data_fetcher);
 }