Remove content::BrowserThread knowledge from Device Sensors

content/browser/device_sensors/data_fetcher_shared_memory.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_H_
 #define CONTENT_BROWSER_DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_H_
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "content/browser/device_sensors/data_fetcher_shared_memory_base.h"
@@ skipping 20 matching lines @@
 #endif
 
 class CONTENT_EXPORT DataFetcherSharedMemory
     : public DataFetcherSharedMemoryBase {
 
  public:
   DataFetcherSharedMemory();
   ~DataFetcherSharedMemory() override;
 
 #if defined(OS_ANDROID)
-  void Shutdown() override;
+  void ShutDownOnUIThread() override;
 #endif
 
  private:
   bool Start(ConsumerType consumer_type, void* buffer) override;
   bool Stop(ConsumerType consumer_type) override;
 
 #if defined(OS_LINUX) || defined(OS_MACOSX) || defined(OS_WIN)
 #if !defined(OS_CHROMEOS)
   DeviceMotionHardwareBuffer* motion_buffer_ = nullptr;
   DeviceOrientationHardwareBuffer* orientation_buffer_ = nullptr;
@@ skipping 29 matching lines @@
   base::win::ScopedComPtr<ISensor> sensor_gyrometer_;
   base::win::ScopedComPtr<ISensor> sensor_light_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(DataFetcherSharedMemory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_H_