abstract name of clipping ops, to transtion to a more restricted set

src/core/SkLiteDL.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLiteDL_DEFINED
 #define SkLiteDL_DEFINED
 
@@ skipping 25 matching lines @@
 
     void save();
     void saveLayer(const SkRect*, const SkPaint*, const SkImageFilter*, SkCanvas::SaveLayerFlags);
     void restore();
 
     void    concat (const SkMatrix&);
     void setMatrix (const SkMatrix&);
     void translate(SkScalar, SkScalar);
     void translateZ(SkScalar);
 
-    void clipPath  (const   SkPath&, SkRegion::Op, bool aa);
-    void clipRect  (const   SkRect&, SkRegion::Op, bool aa);
-    void clipRRect (const  SkRRect&, SkRegion::Op, bool aa);
-    void clipRegion(const SkRegion&, SkRegion::Op);
+    void clipPath  (const   SkPath&, SkCanvas::ClipOp, bool aa);
+    void clipRect  (const   SkRect&, SkCanvas::ClipOp, bool aa);
+    void clipRRect (const  SkRRect&, SkCanvas::ClipOp, bool aa);
+    void clipRegion(const SkRegion&, SkCanvas::ClipOp);
 
     void drawPaint (const SkPaint&);
     void drawPath  (const SkPath&, const SkPaint&);
     void drawRect  (const SkRect&, const SkPaint&);
     void drawRegion(const SkRegion&, const SkPaint&);
     void drawOval  (const SkRect&, const SkPaint&);
     void drawArc   (const SkRect&, SkScalar, SkScalar, bool, const SkPaint&);
     void drawRRect (const SkRRect&, const SkPaint&);
     void drawDRRect(const SkRRect&, const SkRRect&, const SkPaint&);
 
@@ skipping 44 matching lines @@
     template <typename Fn, typename... Args>
     void map(const Fn[], Args...);
 
     SkAutoTMalloc<uint8_t> fBytes;
     size_t                 fUsed;
     size_t                 fReserved;
     SkRect                 fBounds;
 };
 
 #endif//SkLiteDL_DEFINED