Add SK_SUPPORT_LEGACY_HAIRLINE_END_CAP to work around dependent test failure.

src/core/SkScan_Hairline.cpp

Index: src/core/SkScan_Hairline.cpp
diff --git a/src/core/SkScan_Hairline.cpp b/src/core/SkScan_Hairline.cpp
index ce3fe2b6042413639766e5c58427c4e83599c440..cc57bb6d63ce1cfba512d06bd760666ff9ead96e 100644
--- a/src/core/SkScan_Hairline.cpp
+++ b/src/core/SkScan_Hairline.cpp
@@ -593,10 +593,12 @@ void hair_path(const SkPath& path, const SkRasterClip& rclip, SkBlitter* blitter
                 break;
         }
         if (SkPaint::kButt_Cap != capStyle) {
+#if !defined(SK_SUPPORT_LEGACY_HAIRLINE_END_CAP)
             if (prevVerb == SkPath::kMove_Verb &&
                     verb >= SkPath::kLine_Verb && verb <= SkPath::kCubic_Verb) {
                 firstPt = pts[0];  // the curve moved the initial point, so close to it instead
             }
+#endif
             prevVerb = verb;
         }
     }