Revert "Revert of factories should return baseclass, allowing the impl to specialize (patchset #4 i…

src/effects/SkRectShaderImageFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkRectShaderImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkDevice.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkShader.h"
 
-SkRectShaderImageFilter* SkRectShaderImageFilter::Create(SkShader* s, const SkRect& rect) {
+SkImageFilter* SkRectShaderImageFilter::Create(SkShader* s, const SkRect& rect) {
     SkASSERT(s);
     uint32_t flags = CropRect::kHasAll_CropEdge;
     if (rect.width() == 0 || rect.height() == 0) {
         flags = 0x0;
     }
     CropRect cropRect(rect, flags);
     return s ? new SkRectShaderImageFilter(s, &cropRect) : nullptr;
 }
 
-SkRectShaderImageFilter* SkRectShaderImageFilter::Create(SkShader* s, const CropRect* cropRect) {
+SkImageFilter* SkRectShaderImageFilter::Create(SkShader* s, const CropRect* cropRect) {
     SkASSERT(s);
     return s ? new SkRectShaderImageFilter(s, cropRect) : nullptr;
 }
 
 SkRectShaderImageFilter::SkRectShaderImageFilter(SkShader* s, const CropRect* cropRect)
   : INHERITED(0, nullptr, cropRect)
   , fShader(SkRef(s)) {
 }
 
 SkFlattenable* SkRectShaderImageFilter::CreateProc(SkReadBuffer& buffer) {
@@ skipping 45 matching lines @@
 bool SkRectShaderImageFilter::affectsTransparentBlack() const {
     return true;
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkRectShaderImageFilter::toString(SkString* str) const {
     str->appendf("SkRectShaderImageFilter: (");
     str->append(")");
 }
 #endif