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/SampleRegion.cpp b/samplecode/SampleRegion.cpp
index 7c16c01..58ad5e0 100644
--- a/samplecode/SampleRegion.cpp
+++ b/samplecode/SampleRegion.cpp
@@ -32,7 +32,7 @@
     SkPath path;
     path.addRect(0.0f, 0.0f,
                  SkIntToScalar(width), SkIntToScalar(height),
-                 SkPathDirection::kCW);
+                 SkPath::kCW_Direction);
     SkRect r = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));
 
     SkCanvas c(bitmap);