add SK_SUPPORT_LEGACY_BICUBIC_FILTERING to guard pending skia change

Bug: skia:9293
Change-Id: I5adae8c65415ffa96af2c636aa93581a2658be2d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1733435
Commit-Queue: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#683645}

skia/config/SkUserConfig.h

@@ -215,6 +215,10 @@ SK_API void SkDebugf_FileLine(const char* file,
 #define SK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS
 #endif
 
+#ifndef SK_SUPPORT_LEGACY_BICUBIC_FILTERING
+#define SK_SUPPORT_LEGACY_BICUBIC_FILTERING
+#endif
+
 // Max. verb count for paths rendered by the edge-AA tessellating path renderer.
 #define GR_AA_TESSELLATOR_MAX_VERB_COUNT 100