Remove SkImageGeneratorUtils. None of this code is used.

src/utils/SkImageGeneratorUtils.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 "SkImageGeneratorUtils.h"
-#include "SkBitmap.h"
-
-class GeneratorFromEmpty : public SkImageGenerator {
-public:
-    GeneratorFromEmpty(const SkImageInfo& info) : SkImageGenerator(info) {}
-};
-
-SkImageGenerator* SkImageGeneratorUtils::NewEmpty(const SkImageInfo& info) {
-    return new GeneratorFromEmpty(info);
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class GeneratorFromBitmap : public SkImageGenerator {
-public:
-    GeneratorFromBitmap(const SkBitmap& bm) : SkImageGenerator(bm.info()), fBM(bm) {
-        if (!bm.isImmutable()) {
-            bm.copyTo(&fBM);
-        }
-    }
-
-protected:
-    bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
-                     SkPMColor*, int*) override {
-        return fBM.readPixels(info, pixels, rowBytes, 0, 0);
-    }
-
-private:
-    SkBitmap fBM;
-};
-
-SkImageGenerator* SkImageGeneratorUtils::NewFromBitmap(const SkBitmap& bm) {
-    return new GeneratorFromBitmap(bm);
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-#if SK_SUPPORT_GPU
-
-#include "GrContext.h"
-#include "GrTexture.h"
-#include "SkGrPriv.h"
-
-class GeneratorFromTexture : public SkImageGenerator {
-public:
-    GeneratorFromTexture(GrContext* ctx, GrTexture* tex, const SkImageInfo& info)
-        : SkImageGenerator(info), fCtx(ctx), fTexture(tex)
-    {}
-
-protected:
-    GrTexture* onGenerateTexture(GrContext* ctx, const SkIRect* subset) override {
-        if (ctx) {
-            SkASSERT(ctx == fCtx.get());
-        }
-
-        if (!subset) {
-            return SkRef(fTexture.get());
-        }
-        // need to copy the subset into a new texture
-        GrSurfaceDesc desc = fTexture->desc();
-        desc.fWidth = subset->width();
-        desc.fHeight = subset->height();
-
-        GrTexture* dst = fCtx->textureProvider()->createTexture(desc, SkBudgeted::kNo);
-        fCtx->copySurface(dst, fTexture, *subset, SkIPoint::Make(0, 0));
-        return dst;
-    }
-private:
-    SkAutoTUnref<GrContext> fCtx;
-    SkAutoTUnref<GrTexture> fTexture;
-};
-#endif
-
-SkImageGenerator* SkImageGeneratorUtils::NewFromTexture(GrContext* ctx, GrTexture* tex) {
-#if SK_SUPPORT_GPU
-    if (ctx && tex) {
-        const GrSurfaceDesc desc = tex->desc();
-
-        SkColorType ct;
-        SkColorProfileType cpt;
-        if (!GrPixelConfig2ColorAndProfileType(desc.fConfig, &ct, &cpt)) {
-            return nullptr;
-        }
-        const SkAlphaType at = kPremul_SkAlphaType; // take isOpaque from caller?
-        SkImageInfo info = SkImageInfo::Make(desc.fWidth, desc.fHeight, ct, at, cpt);
-        return new GeneratorFromTexture(ctx, tex, info);
-    }
-#endif
-    return nullptr;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-#include "SkImage.h"
-
-class GeneratorFromImage : public SkImageGenerator {
-public:
-    GeneratorFromImage(const SkImage* image, const SkImageInfo& info)
-        : SkImageGenerator(info), fImage(image) {}
-
-protected:
-    bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
-                     SkPMColor*, int*) override {
-        return fImage->readPixels(info, pixels, rowBytes, 0, 0);
-    }
-
-    GrTexture* onGenerateTexture(GrContext* ctx, const SkIRect* subset) override {
-        // waiting on https://code.google.com/p/skia/issues/detail?id=4233
-        return nullptr;
-    }
-
-private:
-    SkAutoTUnref<const SkImage> fImage;
-};
-
-SkImageGenerator* SkImageGeneratorUtils::NewFromImage(const SkImage* image) {
-    if (image) {
-        const SkColorType ct = kN32_SkColorType;
-        const SkAlphaType at = image->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
-        const SkImageInfo info = SkImageInfo::Make(image->width(), image->height(), ct, at);
-        return new GeneratorFromImage(image, info);
-    }
-    return nullptr;
-}
-
-