Revert of Remove now-redundant SkPathOps enum.

src/utils/debugger/SkDebugCanvas.cpp

Index: src/utils/debugger/SkDebugCanvas.cpp
diff --git a/src/utils/debugger/SkDebugCanvas.cpp b/src/utils/debugger/SkDebugCanvas.cpp
index 9911b8fb9c6c99eab0e6a7647c80f4e4073db2a2..1b50efaa325b7b6f677b869cfa4b1c3926aa0bf9 100644
--- a/src/utils/debugger/SkDebugCanvas.cpp
+++ b/src/utils/debugger/SkDebugCanvas.cpp
@@ -564,11 +564,11 @@
 };
 
 static const char* gOpStrs[] = {
-    "kDifference_SkPathOp",
-    "kIntersect_SkPathOp",
-    "kUnion_SkPathOp",
+    "kDifference_PathOp",
+    "kIntersect_PathOp",
+    "kUnion_PathOp",
     "kXor_PathOp",
-    "kReverseDifference_SkPathOp",
+    "kReverseDifference_PathOp",
 };
 
 static const char kHTML4SpaceIndent[] = "    ";