Use InterlockedAdd(0) to get the current state in DXVAVideoDecodeAccelerator::GetState

content/common/gpu/media/dxva_video_decode_accelerator.h

Index: content/common/gpu/media/dxva_video_decode_accelerator.h
diff --git a/content/common/gpu/media/dxva_video_decode_accelerator.h b/content/common/gpu/media/dxva_video_decode_accelerator.h
index 1c78425afceb39c31cabd075e3a4368f9a18b811..692f22b06028b6e11ecff2cdbc01a0178451ef81 100644
--- a/content/common/gpu/media/dxva_video_decode_accelerator.h
+++ b/content/common/gpu/media/dxva_video_decode_accelerator.h
@@ -167,7 +167,7 @@ class CONTENT_EXPORT DXVAVideoDecodeAccelerator
 
   // Gets the state of the decoder. Can be called from the main thread and
   // the decoder thread. Thread safe.
-  State GetState() const;
+  State GetState();
 
   // Worker function for the Decoder Reset functionality. Executes on the
   // decoder thread and queues tasks on the main thread as needed.
@@ -224,7 +224,7 @@ class CONTENT_EXPORT DXVAVideoDecodeAccelerator
   EGLConfig egl_config_;
 
   // Current state of the decoder.
-  State state_;
+  volatile State state_;
 
   MFT_INPUT_STREAM_INFO input_stream_info_;
   MFT_OUTPUT_STREAM_INFO output_stream_info_;