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

gm/lumafilter.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 "gm.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
 #include "SkLumaColorFilter.h"
 
 static SkScalar kSize   = 80;
 static SkScalar kInset  = 10;
 static SkColor  kColor1 = SkColorSetARGB(0xff, 0xff, 0xff, 0);
 static SkColor  kColor2 = SkColorSetARGB(0xff, 0x82, 0xff, 0);
 
 static void draw_label(SkCanvas* canvas, const char* label,
                        const SkPoint& offset) {
     SkPaint paint;
     sk_tool_utils::set_portable_typeface(&paint);
     size_t len = strlen(label);
 
     SkScalar width = paint.measureText(label, len);
     canvas->drawText(label, len, offset.x() - width / 2, offset.y(),
                      paint);
 }
 
-static void draw_scene(SkCanvas* canvas, SkColorFilter* filter, SkXfermode::Mode mode,
+static void draw_scene(SkCanvas* canvas, const sk_sp<SkColorFilter>& filter, SkXfermode::Mode mode,
                        const sk_sp<SkShader>& s1, const sk_sp<SkShader>& s2) {
     SkPaint paint;
     paint.setAntiAlias(true);
     SkRect r, c, bounds = SkRect::MakeWH(kSize, kSize);
 
     c = bounds;
     c.fRight = bounds.centerX();
     paint.setARGB(0x20, 0, 0, 0xff);
     canvas->drawRect(bounds, paint);
 
@@ skipping 36 matching lines @@
 
 class LumaFilterGM : public skiagm::GM {
 public:
     LumaFilterGM() {
         SkColor  g1Colors[] = { kColor1, SkColorSetA(kColor1, 0x20) };
         SkColor  g2Colors[] = { kColor2, SkColorSetA(kColor2, 0x20) };
         SkPoint  g1Points[] = { { 0, 0 }, { 0,     100 } };
         SkPoint  g2Points[] = { { 0, 0 }, { kSize, 0   } };
         SkScalar pos[] = { 0.2f, 1.0f };
 
-        fFilter.reset(SkLumaColorFilter::Create());
+        fFilter = SkLumaColorFilter::Make();
         fGr1 = SkGradientShader::MakeLinear(g1Points, g1Colors, pos, SK_ARRAY_COUNT(g1Colors),
                                             SkShader::kClamp_TileMode);
         fGr2 = SkGradientShader::MakeLinear(g2Points, g2Colors, pos, SK_ARRAY_COUNT(g2Colors),
                                             SkShader::kClamp_TileMode);
     }
 
 protected:
 
     SkString onShortName() override {
         return SkString("lumafilter");
@@ skipping 33 matching lines @@
             for (size_t m = 0; m < SK_ARRAY_COUNT(modes); ++m) {
                 draw_scene(canvas, fFilter, modes[m], shaders[i].fShader1,
                            shaders[i].fShader2);
                 canvas->translate(gridStep, 0);
             }
             canvas->restore();
         }
     }
 
 private:
-    SkAutoTUnref<SkColorFilter> fFilter;
-    sk_sp<SkShader>             fGr1, fGr2;
+    sk_sp<SkColorFilter>    fFilter;
+    sk_sp<SkShader>         fGr1, fGr2;
 
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new LumaFilterGM;)