switched GrClipEdge to an enum class

Bug: skia:
Change-Id: Idf41580314a32739c70721530fc3ca48e566b044
Reviewed-on: https://skia-review.googlesource.com/70023
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
diff --git a/src/gpu/GrRenderTargetContext.cpp b/src/gpu/GrRenderTargetContext.cpp
index ecb325a..141b45a 100644
--- a/src/gpu/GrRenderTargetContext.cpp
+++ b/src/gpu/GrRenderTargetContext.cpp
@@ -1228,11 +1228,11 @@
 
     GrClipEdgeType innerEdgeType, outerEdgeType;
     if (GrAAType::kCoverage == aaType) {
-        innerEdgeType = kInverseFillAA_GrClipEdgeType;
-        outerEdgeType = kFillAA_GrClipEdgeType;
+        innerEdgeType = GrClipEdgeType::kInverseFillAA;
+        outerEdgeType = GrClipEdgeType::kFillAA;
     } else {
-        innerEdgeType = kInverseFillBW_GrClipEdgeType;
-        outerEdgeType = kFillBW_GrClipEdgeType;
+        innerEdgeType = GrClipEdgeType::kInverseFillBW;
+        outerEdgeType = GrClipEdgeType::kFillBW;
     }
 
     SkTCopyOnFirstWrite<SkRRect> inner(origInner), outer(origOuter);