Remove content::BrowserThread knowledge from Device Sensors

content/browser/device_sensors/data_fetcher_shared_memory_base.cc

 // Copyright 2014 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/data_fetcher_shared_memory_base.h"
 
 #include <stddef.h>
 #include <string.h>
 
 #include "base/bind.h"
@@ skipping 155 matching lines @@
   } else {
     if (!Stop(consumer_type))
       return false;
   }
 
   started_consumers_ ^= consumer_type;
 
   return true;
 }
 
-void DataFetcherSharedMemoryBase::Shutdown() {
+void DataFetcherSharedMemoryBase::ShutDownOnUIThread() {
   StopFetchingDeviceData(CONSUMER_TYPE_MOTION);
   StopFetchingDeviceData(CONSUMER_TYPE_ORIENTATION);
   StopFetchingDeviceData(CONSUMER_TYPE_ORIENTATION_ABSOLUTE);
   StopFetchingDeviceData(CONSUMER_TYPE_LIGHT);
 }
 
 mojo::ScopedSharedBufferHandle
 DataFetcherSharedMemoryBase::GetSharedMemoryHandle(ConsumerType consumer_type) {
   auto it = shared_memory_map_.find(consumer_type);
   DCHECK(it != shared_memory_map_.end());
@@ skipping 50 matching lines @@
 
 base::MessageLoop* DataFetcherSharedMemoryBase::GetPollingMessageLoop() const {
   return polling_thread_ ? polling_thread_->message_loop() : nullptr;
 }
 
 bool DataFetcherSharedMemoryBase::IsPollingTimerRunningForTesting() const {
   return polling_thread_ ? polling_thread_->IsTimerRunning() : false;
 }
 
 }  // namespace content