Revert "Use flat version of path-direction enum"

This reverts commit e0fbe943510e5145f8abb2bbe2ce3051cefed366.

Reason for revert: need to add guard flag to flutter

Original change's description:
> Use flat version of path-direction enum
> 
> Bug: skia:9663
> Change-Id: I00077d9f2b14b3e983e6a46ef6f560cabdb1678d
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/242557
> Commit-Queue: Mike Reed <reed@google.com>
> Reviewed-by: Florin Malita <fmalita@chromium.org>

TBR=fmalita@chromium.org,reed@google.com

Change-Id: If47173d9b203b2d3a175af290a15d986accb4703
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:9663
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/255831
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/samplecode/SampleSlides.cpp b/samplecode/SampleSlides.cpp
index d58f4f1..09cb87c 100644
--- a/samplecode/SampleSlides.cpp
+++ b/samplecode/SampleSlides.cpp
@@ -136,9 +136,9 @@
 
     path.reset();
     SkRect r = { 0, 0, 250, 120 };
-    path.addOval(r, SkPathDirection::kCW);
+    path.addOval(r, SkPath::kCW_Direction);
     r.inset(50, 50);
-    path.addRect(r, SkPathDirection::kCCW);
+    path.addRect(r, SkPath::kCCW_Direction);
 
     canvas->translate(320, 20);
     for (i = 0; i < SK_ARRAY_COUNT(gPE2); i++) {