Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/gmp-source/tests/mpn/t-toom33.c

@@ -0,0 +1,11 @@
+#define mpn_toomMN_mul mpn_toom33_mul
+#define mpn_toomMN_mul_itch mpn_toom33_mul_itch
+
+/* Smaller sizes not supported; may lead to recursive calls to
+   toom22_mul with invalid input size. */
+#define MIN_AN MUL_TOOM33_THRESHOLD
+#define MIN_BN(an) (1 + 2*(((an)+2)/(size_t) 3))
+
+#define COUNT 1000
+
+#include "toom-shared.h"