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

media/gpu/ipc/client/gpu_video_encode_accelerator_host.h

 // Copyright 2013 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_CLIENT_GPU_VIDEO_ENCODE_ACCELERATOR_HOST_H_
 #define MEDIA_GPU_IPC_CLIENT_GPU_VIDEO_ENCODE_ACCELERATOR_HOST_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "base/sequence_checker.h"
 #include "base/single_thread_task_runner.h"
-#include "base/threading/non_thread_safe.h"
 #include "gpu/config/gpu_info.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
 #include "ipc/ipc_listener.h"
 #include "media/video/video_encode_accelerator.h"
 
 namespace gfx {
 class Size;
 }  // namespace gfx
 
 namespace gpu {
 class GpuChannelHost;
 }  // namespace gpu
 
 namespace media {
 class VideoFrame;
 }  // namespace media
 
 namespace tracked_objects {
 class Location;
 }  // namespace tracked_objects
 
 namespace media {
 
 // This class is the renderer-side host for the VideoEncodeAccelerator in the
 // GPU process, coordinated over IPC.
 class GpuVideoEncodeAcceleratorHost
     : public IPC::Listener,
       public VideoEncodeAccelerator,
-      public gpu::CommandBufferProxyImpl::DeletionObserver,
-      public base::NonThreadSafe {
+      public gpu::CommandBufferProxyImpl::DeletionObserver {
  public:
   // |this| is guaranteed not to outlive |impl|.  (See comments for |impl_|.)
   explicit GpuVideoEncodeAcceleratorHost(gpu::CommandBufferProxyImpl* impl);
 
   // IPC::Listener implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
   void OnChannelError() override;
 
   // VideoEncodeAccelerator implementation.
   SupportedProfiles GetSupportedProfiles() override;
@@ skipping 61 matching lines @@
   typedef base::hash_map<int32_t, scoped_refptr<VideoFrame>> FrameMap;
   FrameMap frame_map_;
 
   // ID serial number for the next frame to send to the GPU process.
   int32_t next_frame_id_;
 
   // Task runner for tasks that should run on the thread this class is
   // constructed.
   scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   // WeakPtr factory for posting tasks back to itself.
   base::WeakPtrFactory<GpuVideoEncodeAcceleratorHost> weak_this_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuVideoEncodeAcceleratorHost);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_IPC_CLIENT_GPU_VIDEO_ENCODE_ACCELERATOR_HOST_H_