diff --git a/gfx/ycbcr/yuv_convert.h b/gfx/ycbcr/yuv_convert.h
index 6735b77..e624168 100644
--- a/gfx/ycbcr/yuv_convert.h
+++ b/gfx/ycbcr/yuv_convert.h
@@ -6,6 +6,7 @@
 #define MEDIA_BASE_YUV_CONVERT_H_
 
 #include "chromium_types.h"
+#include "gfxCore.h"
 
 namespace mozilla {
 
@@ -20,18 +21,18 @@ enum YUVType {
 
 // Convert a frame of YUV to 32 bit ARGB.
 // Pass in YV16/YV12 depending on source format
-void ConvertYCbCrToRGB32(const uint8* yplane,
-                         const uint8* uplane,
-                         const uint8* vplane,
-                         uint8* rgbframe,
-                         int pic_x,
-                         int pic_y,
-                         int pic_width,
-                         int pic_height,
-                         int ystride,
-                         int uvstride,
-                         int rgbstride,
-                         YUVType yuv_type);
+NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane,
+                                  const uint8* uplane,
+                                  const uint8* vplane,
+                                  uint8* rgbframe,
+                                  int pic_x,
+                                  int pic_y,
+                                  int pic_width,
+                                  int pic_height,
+                                  int ystride,
+                                  int uvstride,
+                                  int rgbstride,
+                                  YUVType yuv_type);
 
 }  // namespace gfx
 }  // namespace mozilla