Revamp filter primitive region calculations for Filter Effects

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

 /*
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 96 matching lines @@
     for (size_t i = 0; i < operations.size(); ++i) {
         const FilterOperation& op = *operations.at(i);
         switch (op.type()) {
         case FilterOperation::REFERENCE: {
             Filter* referenceFilter = toReferenceFilterOperation(op).getFilter();
             if (referenceFilter && referenceFilter->lastEffect()) {
                 populateSourceGraphicImageFilters(referenceFilter->getSourceGraphic(), nullptr, currentColorSpace);
 
                 FilterEffect* filterEffect = referenceFilter->lastEffect();
                 currentColorSpace = filterEffect->operatingColorSpace();
-                filterEffect->determineFilterPrimitiveSubregion(MapRectForward);
+                filterEffect->determineMaximumEffectRect(MapRectForward);
                 filters->appendReferenceFilter(SkiaImageFilterBuilder::build(filterEffect, currentColorSpace));
             }
             break;
         }
         case FilterOperation::GRAYSCALE:
         case FilterOperation::SEPIA:
         case FilterOperation::SATURATE:
         case FilterOperation::HUE_ROTATE: {
             float amount = toBasicColorMatrixFilterOperation(op).amount();
             switch (op.type()) {
@@ skipping 80 matching lines @@
     } else {
         maskedInput = input;
     }
     sk_sp<SkImageFilter> flipImageFilter = SkImageFilter::MakeMatrixFilter(
         reflection.reflectionMatrix(), kLow_SkFilterQuality, std::move(maskedInput));
     return SkXfermodeImageFilter::Make(nullptr, std::move(flipImageFilter), std::move(input), nullptr);
 }
 
 } // namespace SkiaImageFilterBuilder
 } // namespace blink