Add samples to Viewer.

tools/viewer/ImageSlide.cpp

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "ImageSlide.h"
 
 #include "SkBitmap.h"
@@ skipping 17 matching lines @@
     if (canvas->getMetaData().hasBool(kImageColorXformMetaData, true)) {
         canvas->drawBitmap(fXformedBitmap, 0, 0);
     } else {
         // skbug.com/5428
         // drawImage() and drawBitmap() behave differently in sRGB mode.
         // canvas->drawImage(fImage.get(), 0, 0);
         canvas->drawBitmap(fOriginalBitmap, 0, 0);
     }
 }
 
-void ImageSlide::load() {
+void ImageSlide::load(SkScalar, SkScalar) {
     sk_sp<SkData> encoded = SkData::MakeFromFileName(fPath.c_str());
     fImage = SkImage::MakeFromEncoded(encoded);
     fImage->asLegacyBitmap(&fOriginalBitmap, SkImage::kRO_LegacyBitmapMode);
 
     SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded.get()));
     sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getColorSpace());
     sk_sp<SkColorSpace> dstSpace = SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named);
     std::unique_ptr<SkColorSpaceXform> xform = SkColorSpaceXform::New(srcSpace, dstSpace);
     fOriginalBitmap.deepCopyTo(&fXformedBitmap);
     uint32_t* row = (uint32_t*) fXformedBitmap.getPixels();
     for (int y = 0; y < fXformedBitmap.height(); y++) {
         xform->xform_RGBA_8888(row, row, fXformedBitmap.width());
         row = SkTAddOffset<uint32_t>(row, fXformedBitmap.rowBytes());
     }
     fXformedBitmap.notifyPixelsChanged(); // This is needed for the deepCopy
 }
 
 void ImageSlide::unload() {
     fImage.reset(nullptr);
 }