change back to method for localmatrix imagefilter

src/core/SkImageFilter.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 "SkImageFilter.h"
 
 #include "SkBitmap.h"
@@ skipping 422 matching lines @@
                                         const SkMatrix&, const SkIRect&) const {
     return false;
 }
 
 SkImageFilter* SkImageFilter::CreateMatrixFilter(const SkMatrix& matrix,
                                                  SkFilterQuality filterQuality,
                                                  SkImageFilter* input) {
     return SkMatrixImageFilter::Create(matrix, filterQuality, input);
 }
 
-SkImageFilter* SkImageFilter::CreateLocalMatrixFilter(const SkMatrix& matrix,
-                                                      SkImageFilter* input) {
-    return SkLocalMatrixImageFilter::Create(matrix, input);
+SkImageFilter* SkImageFilter::newWithLocalMatrix(const SkMatrix& matrix) const {
+    // SkLocalMatrixImageFilter takes SkImage* in its factory, but logically that parameter
+    // is *always* treated as a const ptr. Hence the const-cast here.
+    //
+    return SkLocalMatrixImageFilter::Create(matrix, const_cast<SkImageFilter*>(this));
 }
 
 #if SK_SUPPORT_GPU
 
 void SkImageFilter::WrapTexture(GrTexture* texture, int width, int height, SkBitmap* result) {
     SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
     result->setInfo(info);
     result->setPixelRef(new SkGrPixelRef(info, texture))->unref();
 }
 
@@ skipping 141 matching lines @@
     }
     return dev;
 }
 
 bool SkImageFilter::DeviceProxy::filterImage(const SkImageFilter* filter, const SkBitmap& src,
                                        const SkImageFilter::Context& ctx,
                                        SkBitmap* result, SkIPoint* offset) {
     return fDevice->filterImage(filter, src, ctx, result, offset);
 }