Replace deprecated base::NonThreadSafe in media/gpu in favor of SequenceChecker.

media/gpu/ipc/service/gpu_jpeg_decode_accelerator.h

 // Copyright 2015 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 MEDIA_GPU_IPC_SERVICE_GPU_JPEG_DECODE_ACCELERATOR_H_
 #define MEDIA_GPU_IPC_SERVICE_GPU_JPEG_DECODE_ACCELERATOR_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "base/sequence_checker.h"
 #include "base/synchronization/waitable_event.h"
-#include "base/threading/non_thread_safe.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "media/video/jpeg_decode_accelerator.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace gpu {
 class FilteredSender;
 }
 
 namespace media {
 
 class GpuJpegDecodeAcceleratorFactoryProvider {
  public:
   using CreateAcceleratorCB =
       base::Callback<std::unique_ptr<JpegDecodeAccelerator>(
           scoped_refptr<base::SingleThreadTaskRunner>)>;
 
   // Static query for JPEG supported. This query calls the appropriate
   // platform-specific version.
   static bool IsAcceleratedJpegDecodeSupported();
 
   static std::vector<CreateAcceleratorCB> GetAcceleratorFactories();
 };
 
 class GpuJpegDecodeAccelerator
     : public IPC::Sender,
-      public base::NonThreadSafe,
       public base::SupportsWeakPtr<GpuJpegDecodeAccelerator> {
  public:
   // |channel| must outlive this object.
   // This convenience constructor internally calls
   // GpuJpegDecodeAcceleratorFactoryProvider::GetAcceleratorFactories() to
   // fill |accelerator_factory_functions_|.
   GpuJpegDecodeAccelerator(
       gpu::FilteredSender* channel,
       scoped_refptr<base::SingleThreadTaskRunner> io_task_runner);
 
@@ skipping 30 matching lines @@
 
   // GPU child task runner.
   scoped_refptr<base::SingleThreadTaskRunner> child_task_runner_;
 
   // GPU IO task runner.
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   // Number of clients added to |filter_|.
   int client_number_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(GpuJpegDecodeAccelerator);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_IPC_SERVICE_GPU_JPEG_DECODE_ACCELERATOR_H_