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

content/browser/gpu/gpu_process_host.h

 // Copyright (c) 2012 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_GPU_GPU_PROCESS_HOST_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <queue>
 #include <set>
 #include <string>
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_child_process_host_delegate.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "gpu/command_buffer/common/activity_flags.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/config/gpu_feature_info.h"
 #include "gpu/config/gpu_info.h"
 #include "gpu/ipc/common/surface_handle.h"
@@ skipping 19 matching lines @@
 struct GpuPreferences;
 class ShaderDiskCache;
 struct SyncToken;
 }
 
 namespace content {
 class BrowserChildProcessHostImpl;
 
 class GpuProcessHost : public BrowserChildProcessHostDelegate,
                        public IPC::Sender,
-                       public ui::mojom::GpuHost,
-                       public base::NonThreadSafe {
+                       public ui::mojom::GpuHost {
  public:
   enum GpuProcessKind {
     GPU_PROCESS_KIND_UNSANDBOXED,
     GPU_PROCESS_KIND_SANDBOXED,
     GPU_PROCESS_KIND_COUNT
   };
 
   enum class EstablishChannelStatus {
     GPU_ACCESS_DENIED,  // GPU access was not allowed.
     GPU_HOST_INVALID,   // Request failed because the gpu host became invalid
@@ skipping 213 matching lines @@
       ClientIdToShaderCacheMap;
   ClientIdToShaderCacheMap client_id_to_shader_cache_;
 
   std::string shader_prefix_key_info_;
 
   ui::mojom::GpuMainAssociatedPtr gpu_main_ptr_;
   ui::mojom::GpuServicePtr gpu_service_ptr_;
   mojo::Binding<ui::mojom::GpuHost> gpu_host_binding_;
   gpu::GpuProcessHostActivityFlags activity_flags_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   base::WeakPtrFactory<GpuProcessHost> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_