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

src/svg/SkSVGDevice.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkSVGDevice.h"
 
 #include "SkBase64.h"
@@ skipping 712 matching lines @@
 
     SkDraw adjustedDraw(draw);
     adjustedDraw.fMatrix = &adjustedMatrix;
 
     SkClipStack adjustedClipStack;
     if (srcOrNull && *srcOrNull != SkRect::Make(bm.bounds())) {
         SkRect devClipRect;
         draw.fMatrix->mapRect(&devClipRect, dst);
 
         adjustedClipStack = *draw.fClipStack;
-        adjustedClipStack.clipDevRect(devClipRect, SkRegion::kIntersect_Op, paint.isAntiAlias());
+        adjustedClipStack.clipDevRect(devClipRect, SkCanvas::kIntersect_Op, paint.isAntiAlias());
         adjustedDraw.fClipStack = &adjustedClipStack;
     }
 
     drawBitmapCommon(adjustedDraw, bm, paint);
 }
 
 void SkSVGDevice::drawText(const SkDraw& draw, const void* text, size_t len,
                            SkScalar x, SkScalar y, const SkPaint& paint) {
     AutoElement elem("text", fWriter, fResourceBucket, draw, paint);
     elem.addTextAttributes(paint);
@@ skipping 62 matching lines @@
                                const SkPaint& paint) {
     // todo
     SkDebugf("unsupported operation: drawVertices()\n");
 }
 
 void SkSVGDevice::drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                              const SkPaint&) {
     // todo
     SkDebugf("unsupported operation: drawDevice()\n");
 }