Remove uses of SkImageDecoder from gms

gm/cmykjpeg.cpp

-/*
- * Copyright 2012 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 "Resources.h"
-#include "SkCanvas.h"
-#include "SkImageDecoder.h"
-#include "SkStream.h"
-
-namespace skiagm {
-
-/** Draw a CMYK encoded jpeg - libjpeg doesn't support CMYK->RGB
-    conversion so this tests Skia's internal processing
-*/
-class CMYKJpegGM : public GM {
-public:
-    CMYKJpegGM() {}
-
-protected:
-    void onOnceBeforeDraw() override {
-        // parameters to the "decode" call
-        bool dither = false;
-
-        SkString jpgFilename = GetResourcePath("CMYK.jpg");
-        SkFILEStream stream(jpgFilename.c_str());
-        if (!stream.isValid()) {
-            SkDebugf("Could not find CMYK.jpg, please set --resourcePath correctly.\n");
-            return;
-        }
-
-        SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
-        if (codec) {
-            stream.rewind();
-            codec->setDitherImage(dither);
-            codec->decode(&stream, &fBitmap, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
-            delete codec;
-        }
-    }
-
-    virtual SkString onShortName() override {
-        return SkString("cmykjpeg");
-    }
-
-    virtual SkISize onISize() override {
-        return SkISize::Make(640, 480);
-    }
-
-    virtual void onDraw(SkCanvas* canvas) override {
-
-        canvas->translate(20*SK_Scalar1, 20*SK_Scalar1);
-        canvas->drawBitmap(fBitmap, 0, 0);
-    }
-
-private:
-    SkBitmap fBitmap;
-
-    typedef GM INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-static GM* MyFactory(void*) { return new CMYKJpegGM; }
-static GMRegistry reg(MyFactory);
-
-}