Reland of [2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o…

gm/colormatrix.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 "SkColorMatrixFilter.h"
 #include "SkGradientShader.h"
 #include "SkImage.h"
 
 #define WIDTH 500
 #define HEIGHT 500
 
 static void set_color_matrix(SkPaint* paint, const SkColorMatrix& matrix) {
-    paint->setColorFilter(SkColorMatrixFilter::Create(matrix))->unref();
+    paint->setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(matrix.fMat));
 }
 
 static void set_array(SkPaint* paint, const SkScalar array[]) {
-    paint->setColorFilter(SkColorMatrixFilter::Create(array))->unref();
+    paint->setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(array));
 }
 
 class ColorMatrixGM : public skiagm::GM {
 public:
     ColorMatrixGM() {
         this->setBGColor(sk_tool_utils::color_to_565(0xFF808080));
     }
 
 protected:
     SkString onShortName() override {
@@ skipping 107 matching lines @@
     }
 
 private:
     sk_sp<SkImage>   fSolidImg;
     sk_sp<SkImage>   fTransparentImg;
 
     typedef skiagm::GM INHERITED;
 };
 DEF_GM( return new ColorMatrixGM; )