Remove convertToSkiaFilterLevel()

Source/platform/graphics/skia/NativeImageSkia.cpp

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 244 matching lines @@
     // a shifted image, it will shift it from there using the localMatrix.
     const float adjustedX = phase.x() + normSrcRect.x() * scale.width();
     const float adjustedY = phase.y() + normSrcRect.y() * scale.height();
     localMatrix.setTranslate(SkFloatToScalar(adjustedX), SkFloatToScalar(adjustedY));
 
     RefPtr<SkShader> shader;
 
     // Bicubic filter is only applied to defer-decoded images, see
     // NativeImageSkia::draw for details.
     bool useBicubicFilter = resampling == InterpolationHigh && isLazyDecoded;
-
+    bool isResampled = false;
     if (resampling == InterpolationHigh && !useBicubicFilter) {
         // Do nice resampling.
+        isResampled = true;
         float scaleX = destBitmapWidth / normSrcRect.width();
         float scaleY = destBitmapHeight / normSrcRect.height();
         SkRect scaledSrcRect;
 
         // Since we are resizing the bitmap, we need to remove the scale
         // applied to the pixels in the bitmap shader. This means we need
         // CTM * localMatrix to have identity scale. Since we
         // can't modify CTM (or the rectangle will be drawn in the wrong
         // place), we must set localMatrix's scale to the inverse of
         // CTM scale.
@@ skipping 25 matching lines @@
             shader = adoptRef(SkShader::CreateBitmapShader(
                 createBitmapWithSpace(srcSubset, repeatSpacing.width() * ctmScaleX, repeatSpacing.height() * ctmScaleY),
                 SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix));
         }
     }
 
     SkPaint paint;
     paint.setShader(shader.get());
     paint.setXfermode(WebCoreCompositeToSkiaComposite(compositeOp, blendMode).get());
     paint.setColorFilter(context->colorFilter());
-    paint.setFilterLevel(convertToSkiaFilterLevel(useBicubicFilter, resampling));
+    paint.setFilterLevel(isResampled ? SkPaint::kNone_FilterLevel : static_cast<SkPaint::FilterLevel>(resampling));
 
     if (isLazyDecoded)
         PlatformInstrumentation::didDrawLazyPixelRef(bitmap().getGenerationID());
 
     context->drawRect(destRect, paint);
 }
 
 bool NativeImageSkia::shouldCacheResampling(const SkISize& scaledImageSize, const SkIRect& scaledImageSubset) const
 {
     // Check whether the requested dimensions match previous request.
@@ skipping 60 matching lines @@
 SkIRect NativeImageSkia::ImageResourceInfo::rectInSubset(const SkIRect& otherScaledImageSubset)
 {
     if (!scaledImageSubset.contains(otherScaledImageSubset))
         return SkIRect::MakeEmpty();
     SkIRect subsetRect = otherScaledImageSubset;
     subsetRect.offset(-scaledImageSubset.x(), -scaledImageSubset.y());
     return subsetRect;
 }
 
 } // namespace blink