1 files changed, 10 insertions, 2 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/vp8/common/treecoder.h b/chromium/third_party/libvpx/source/libvpx/vp8/common/treecoder.h
index ebf51c5ed65..d22b7c570cb 100644
--- a/chromium/third_party/libvpx/source/libvpx/vp8/common/treecoder.h
+++ b/chromium/third_party/libvpx/source/libvpx/vp8/common/treecoder.h
@@ -9,8 +9,12 @@
  */
 
 
-#ifndef __INC_TREECODER_H
-#define __INC_TREECODER_H
+#ifndef VP8_COMMON_TREECODER_H_
+#define VP8_COMMON_TREECODER_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 typedef unsigned char vp8bc_index_t; /* probability index */
 
@@ -87,4 +91,8 @@ void vp8bc_tree_probs_from_distribution(
 );
 
 
+#ifdef __cplusplus
+}  // extern "C"
 #endif
+
+#endif  // VP8_COMMON_TREECODER_H_