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

tests/SkLiteDLTest.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 #include "SkLiteDL.h"
 #include "SkLiteRecorder.h"
 
 DEF_TEST(SkLiteDL_basics, r) {
     sk_sp<SkLiteDL> p { SkLiteDL::New({2,2,3,3}) };
 
     p->save();
-        p->clipRect(SkRect{2,3,4,5}, SkRegion::kIntersect_Op, true);
+        p->clipRect(SkRect{2,3,4,5}, SkCanvas::kIntersect_Op, true);
         p->drawRect(SkRect{0,0,9,9}, SkPaint{});
     p->restore();
 }
 
 DEF_TEST(SkLiteRecorder, r) {
     sk_sp<SkLiteDL> p { SkLiteDL::New({2,2,3,3}) };
 
     SkLiteRecorder rec;
     SkCanvas* c = &rec;
 
     rec.reset(p.get());
 
     c->save();
-        c->clipRect(SkRect{2,3,4,5}, SkRegion::kIntersect_Op, true);
+        c->clipRect(SkRect{2,3,4,5}, SkCanvas::kIntersect_Op, true);
         c->drawRect(SkRect{0,0,9,9}, SkPaint{});
     c->restore();
 }