gdiplus: Added GdipSetImageAttributesColorKeys stub.
diff --git a/include/Makefile.in b/include/Makefile.in
index 05dc60e..9fb456a 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -164,6 +164,7 @@
 	fci.h \
 	fdi.h \
 	gdiplus.h \
+	gdipluscolormatrix.h \
 	gdiplusenums.h \
 	gdiplusflat.h \
 	gdiplusgpstubs.h \