Harmonize FilterEffect::mapRect and mapPaintRect

third_party/WebKit/Source/platform/graphics/filters/SourceAlpha.cpp

 /*
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 23 matching lines @@
     return new SourceAlpha(sourceEffect);
 }
 
 SourceAlpha::SourceAlpha(FilterEffect* sourceEffect)
     : FilterEffect(sourceEffect->getFilter())
 {
     setOperatingColorSpace(sourceEffect->operatingColorSpace());
     inputEffects().append(sourceEffect);
 }
 
-FloatRect SourceAlpha::determineAbsolutePaintRect(const FloatRect& requestedRect) const
-{
-    return inputEffect(0)->determineAbsolutePaintRect(requestedRect);
-}
-
 sk_sp<SkImageFilter> SourceAlpha::createImageFilter()
 {
     sk_sp<SkImageFilter> sourceGraphic(SkiaImageFilterBuilder::build(inputEffect(0), operatingColorSpace()));
     SkScalar matrix[20] = {
         0, 0, 0, 0, 0,
         0, 0, 0, 0, 0,
         0, 0, 0, 0, 0,
         0, 0, 0, SK_Scalar1, 0
     };
     sk_sp<SkColorFilter> colorFilter = SkColorFilter::MakeMatrixFilterRowMajor255(matrix);
     return SkColorFilterImageFilter::Make(std::move(colorFilter), std::move(sourceGraphic));
 }
 
 TextStream& SourceAlpha::externalRepresentation(TextStream& ts, int indent) const
 {
     writeIndent(ts, indent);
     ts << "[SourceAlpha]\n";
     return ts;
 }
 
 } // namespace blink