Convert unit tests, GMs from SkBitmapSource to SkImagesource

gm/bitmapsource2.cpp

-/*
- * Copyright 2015 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 "SkBitmapSource.h"
-
-namespace skiagm {
-
-// This GM reproduces the issue in crbug.com/472795. The SkBitmapSource image
-// is shifted for high quality mode between cpu and gpu.
-class BitmapSourceGM : public GM {
-public:
-    BitmapSourceGM(const char* suffix, SkFilterQuality filter) : fSuffix(suffix), fFilter(filter) {
-        this->setBGColor(0xFFFFFFFF);
-    }
-
-protected:
-    SkString onShortName() override {
-        SkString name("bitmapsrc2_");
-        name.append(fSuffix);
-        return name;
-    }
-
-    SkISize onISize() override { return SkISize::Make(256, 256); }
-
-    // Create a bitmap with high frequency vertical stripes
-    void onOnceBeforeDraw() override {
-        static const SkPMColor gColors[] = {
-            SK_ColorRED,     SK_ColorGRAY,
-            SK_ColorGREEN,   SK_ColorGRAY,
-            SK_ColorBLUE,    SK_ColorGRAY,
-            SK_ColorCYAN,    SK_ColorGRAY,
-            SK_ColorMAGENTA, SK_ColorGRAY,
-            SK_ColorYELLOW,  SK_ColorGRAY,
-            SK_ColorWHITE,   SK_ColorGRAY,
-        };
-
-        fBM.allocN32Pixels(kImageSize, kImageSize, true);
-
-        SkCanvas canvas(fBM);
-
-        int curColor = 0;
-
-        for (int x = 0; x < kImageSize; x += 3) {
-            SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0), 
-                                        SkIntToScalar(3), SkIntToScalar(kImageSize));
-            SkPaint p;
-            p.setColor(gColors[curColor]);
-            canvas.drawRect(r, p);
-
-            curColor = (curColor+1) % SK_ARRAY_COUNT(gColors);
-        }
-    }
-
-    void onDraw(SkCanvas* canvas) override {
-        SkRect srcRect = SkRect::MakeLTRB(0, 0,
-                                          SkIntToScalar(kImageSize), SkIntToScalar(kImageSize));
-        SkRect dstRect = SkRect::MakeLTRB(0.75f, 0.75f, 225.75f, 225.75f);
-
-        SkAutoTUnref<SkImageFilter> filter(SkBitmapSource::Create(fBM, srcRect, dstRect, fFilter));
-
-        SkPaint p;
-        p.setImageFilter(filter);
-
-        canvas->saveLayer(nullptr, &p);
-        canvas->restore();
-    }
-
-private:
-    static const int kImageSize = 503;
-
-    SkString fSuffix;
-    SkFilterQuality fFilter;
-    SkBitmap fBM;
-
-    typedef GM INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-DEF_GM(return new BitmapSourceGM("none", kNone_SkFilterQuality);)
-DEF_GM(return new BitmapSourceGM("low", kLow_SkFilterQuality);)
-DEF_GM(return new BitmapSourceGM("med", kMedium_SkFilterQuality);)
-DEF_GM(return new BitmapSourceGM("high", kHigh_SkFilterQuality);)
-}