increase subdivision for very large cubics

gm/strokefill.cpp

Index: gm/strokefill.cpp
diff --git a/gm/strokefill.cpp b/gm/strokefill.cpp
index 4f6e6d292783976fea448c485f7dce9ffb14e93d..edce8087b989c00daa10d945d00e69f7658b4ab7 100644
--- a/gm/strokefill.cpp
+++ b/gm/strokefill.cpp
@@ -331,3 +331,29 @@ DEF_SIMPLE_GM_BG_NAME(strokefill, canvas, 640, 480, SK_ColorWHITE,
         path4.moveTo(0, 0); // test for crbug.com/247770
         canvas->drawPath(path4, paint);
 }
+
+DEF_SIMPLE_GM(bug339297, canvas, 640, 480) {
+    SkPath path;
+    path.moveTo(-469515, -10354890);
+    path.cubicTo(771919.62f, -10411179, 2013360.1f, -10243774, 3195542.8f, -9860664);
+    path.lineTo(3195550, -9860655);
+    path.lineTo(3195539, -9860652);
+    path.lineTo(3195539, -9860652);
+    path.lineTo(3195539, -9860652);
+    path.cubicTo(2013358.1f, -10243761, 771919.25f, -10411166, -469513.84f, -10354877);
+    path.lineTo(-469515, -10354890);
+    path.close();
+
+    canvas->translate(258, 10365663);
+
+    SkPaint paint;
+    paint.setAntiAlias(true);
+    paint.setColor(SK_ColorBLACK);
+    paint.setStyle(SkPaint::kFill_Style);
+    canvas->drawPath(path, paint);
+
+    paint.setColor(SK_ColorRED);
+    paint.setStyle(SkPaint::kStroke_Style);
+    paint.setStrokeWidth(1);
+    canvas->drawPath(path, paint);
+}