| Index: third_party/mojo/src/mojo/edk/system/shared_buffer_dispatcher.h
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| diff --git a/third_party/mojo/src/mojo/edk/system/shared_buffer_dispatcher.h b/third_party/mojo/src/mojo/edk/system/shared_buffer_dispatcher.h
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| index deef5b4472824082130d478288a43313f74fdd77..1222e030c185364ce3347b229a2bdcaa9c230141 100644
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| --- a/third_party/mojo/src/mojo/edk/system/shared_buffer_dispatcher.h
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| +++ b/third_party/mojo/src/mojo/edk/system/shared_buffer_dispatcher.h
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| @@ -93,14 +93,17 @@ class MOJO_SYSTEM_IMPL_EXPORT SharedBufferDispatcher final
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|        scoped_ptr<embedder::PlatformSharedBufferMapping>* mapping) override;
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|    void StartSerializeImplNoLock(Channel* channel,
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|                                  size_t* max_size,
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| -                                size_t* max_platform_handles) override;
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| +                                size_t* max_platform_handles) override
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| +      MOJO_NOT_THREAD_SAFE;
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|    bool EndSerializeAndCloseImplNoLock(
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|        Channel* channel,
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|        void* destination,
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|        size_t* actual_size,
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| -      embedder::PlatformHandleVector* platform_handles) override;
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| +      embedder::PlatformHandleVector* platform_handles) override
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| +      MOJO_NOT_THREAD_SAFE;
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|  
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| -  scoped_refptr<embedder::PlatformSharedBuffer> shared_buffer_;
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| +  scoped_refptr<embedder::PlatformSharedBuffer> shared_buffer_
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| +      MOJO_GUARDED_BY(mutex());
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|  
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|    MOJO_DISALLOW_COPY_AND_ASSIGN(SharedBufferDispatcher);
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|  };
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| 
 |