allow clip calls w/o op param, remove unnecessary kReplace ops

gm/complexclip.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 #include "SkCanvas.h"
 //#include "SkParsePath.h"
 #include "SkPath.h"
@@ skipping 112 matching lines @@
                 this->drawHairlines(canvas, path, clipA, clipB);
 
                 bool doInvA = SkToBool(invBits & 1);
                 bool doInvB = SkToBool(invBits & 2);
                 canvas->save();
                     // set clip
                     clipA.setFillType(doInvA ? SkPath::kInverseEvenOdd_FillType :
                                       SkPath::kEvenOdd_FillType);
                     clipB.setFillType(doInvB ? SkPath::kInverseEvenOdd_FillType :
                                       SkPath::kEvenOdd_FillType);
-                    canvas->clipPath(clipA, SkCanvas::kIntersect_Op, fDoAAClip);
+                    canvas->clipPath(clipA, fDoAAClip);
                     canvas->clipPath(clipB, gOps[op].fOp, fDoAAClip);
 
                     // In the inverse case we need to prevent the draw from covering the whole
                     // canvas.
                     if (fInvertDraw) {
                         SkRect rectClip = clipA.getBounds();
                         rectClip.join(path.getBounds());
                         rectClip.join(path.getBounds());
                         rectClip.outset(5, 5);
                         canvas->clipRect(rectClip);
@@ skipping 57 matching lines @@
 
 DEF_GM(return new ComplexClipGM(false, false, false);)
 DEF_GM(return new ComplexClipGM(false, false, true);)
 DEF_GM(return new ComplexClipGM(false, true, false);)
 DEF_GM(return new ComplexClipGM(false, true, true);)
 DEF_GM(return new ComplexClipGM(true, false, false);)
 DEF_GM(return new ComplexClipGM(true, false, true);)
 DEF_GM(return new ComplexClipGM(true, true, false);)
 DEF_GM(return new ComplexClipGM(true, true, true);)
 }