use ClipOp instead of SkRegion for clipping

tests/ReadPixelsTest.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 "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
@@ skipping 89 matching lines @@
         intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels());
         for (int y = 0; y < DEV_H; ++y) {
             for (int x = 0; x < DEV_W; ++x) {
                 SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel());
                 *pixel = getCanvasColor(x, y);
             }
         }
     }
     canvas->save();
     canvas->setMatrix(SkMatrix::I());
-    canvas->clipRect(DEV_RECT_S, SkRegion::kReplace_Op);
+    canvas->legacyClipRect(DEV_RECT_S, SkRegion::kReplace_Op);
     SkPaint paint;
     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
     canvas->drawBitmap(bmp, 0, 0, &paint);
     canvas->restore();
 }
 
 static void fillBitmap(SkBitmap* bitmap) {
     SkASSERT(bitmap->lockPixelsAreWritable());
     SkAutoLockPixels alp(*bitmap);
     int w = bitmap->width();
@@ skipping 263 matching lines @@
                         checkRead(reporter, wkbmp, clippedRect.fLeft,
                                   clippedRect.fTop, true, false);
                     } else {
                         REPORTER_ASSERT(reporter, !success);
                     }
                 }
             }
         }
     }
 }