Change SkImageFilter's cropRect from SkIRect to a CropRect struct

src/effects/SkMergeImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMergeImageFilter.h"
 #include "SkCanvas.h"
 #include "SkDevice.h"
@@ skipping 22 matching lines @@
         for (int i = 0; i < inputCount; ++i) {
             fModes[i] = SkToU8(modes[i]);
         }
     } else {
         fModes = NULL;
     }
 }
 
 SkMergeImageFilter::SkMergeImageFilter(SkImageFilter* first, SkImageFilter* second,
                                        SkXfermode::Mode mode,
-                                       const SkIRect* cropRect) : INHERITED(first, second, cropRect) {
+                                       const CropRect* cropRect) : INHERITED(first, second, cropRect) {
     if (SkXfermode::kSrcOver_Mode != mode) {
         SkXfermode::Mode modes[] = { mode, mode };
         this->initModes(modes);
     } else {
         fModes = NULL;
     }
 }
 
 SkMergeImageFilter::SkMergeImageFilter(SkImageFilter* filters[], int count,
                                        const SkXfermode::Mode modes[],
-                                       const SkIRect* cropRect) : INHERITED(count, filters, cropRect) {
+                                       const CropRect* cropRect) : INHERITED(count, filters, cropRect) {
     this->initModes(modes);
 }
 
 SkMergeImageFilter::~SkMergeImageFilter() {
 
     if (fModes != SkTCast<uint8_t*>(fStorage)) {
         sk_free(fModes);
     }
 }
 
@@ skipping 93 matching lines @@
 SkMergeImageFilter::SkMergeImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
     bool hasModes = buffer.readBool();
     if (hasModes) {
         this->initAllocModes();
         SkASSERT(buffer.getArrayCount() == countInputs() * sizeof(fModes[0]));
         buffer.readByteArray(fModes);
     } else {
         fModes = 0;
     }
 }