Drop some dead code from FilterEffect

Source/platform/graphics/filters/FilterEffect.cpp

 /*
  * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2012 University of Szeged
  * 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
@@ skipping 12 matching lines @@
 
 #include "config.h"
 
 #include "platform/graphics/filters/FilterEffect.h"
 
 #include "platform/graphics/filters/Filter.h"
 
 namespace blink {
 
 FilterEffect::FilterEffect(Filter* filter)
-    : m_alphaImage(false)
-    , m_filter(filter)
+    : m_filter(filter)
     , m_hasX(false)
     , m_hasY(false)
     , m_hasWidth(false)
     , m_hasHeight(false)
     , m_clipsToBounds(true)
     , m_operatingColorSpace(ColorSpaceLinearRGB)
-    , m_resultColorSpace(ColorSpaceDeviceRGB)
 {
     ASSERT(m_filter);
 }
 
 FilterEffect::~FilterEffect()
 {
 }
 
 DEFINE_TRACE(FilterEffect)
 {
@@ skipping 37 matching lines @@
     FloatRect result;
     if (m_inputEffects.size() > 0) {
         result = m_inputEffects.at(0)->mapRectRecursive(rect);
         for (unsigned i = 1; i < m_inputEffects.size(); ++i)
             result.unite(m_inputEffects.at(i)->mapRectRecursive(rect));
     } else
         result = rect;
     return mapRect(result);
 }
 
-FloatRect FilterEffect::getSourceRect(const FloatRect& destRect, const FloatRect& destClipRect)
-{
-    FloatRect sourceRect = mapRect(destRect, false);
-    FloatRect sourceClipRect = mapRect(destClipRect, false);
-
-    FloatRect boundaries = filter()->mapLocalRectToAbsoluteRect(effectBoundaries());
-    if (hasX())
-        sourceClipRect.setX(boundaries.x());
-    if (hasY())
-        sourceClipRect.setY(boundaries.y());
-    if (hasWidth())
-        sourceClipRect.setWidth(boundaries.width());
-    if (hasHeight())
-        sourceClipRect.setHeight(boundaries.height());
-
-    FloatRect result;
-    if (m_inputEffects.size() > 0) {
-        result = m_inputEffects.at(0)->getSourceRect(sourceRect, sourceClipRect);
-        for (unsigned i = 1; i < m_inputEffects.size(); ++i)
-            result.unite(m_inputEffects.at(i)->getSourceRect(sourceRect, sourceClipRect));
-    } else {
-        result = sourceRect;
-        result.intersect(sourceClipRect);
-    }
-    return result;
-}
-
 FilterEffect* FilterEffect::inputEffect(unsigned number) const
 {
     ASSERT_WITH_SECURITY_IMPLICATION(number < m_inputEffects.size());
     return m_inputEffects.at(number).get();
 }
 
 void FilterEffect::addAbsolutePaintRect(const FloatRect& paintRect)
 {
     IntRect intPaintRect(enclosingIntRect(paintRect));
     if (m_absolutePaintRect.contains(intPaintRect))
         return;
     intPaintRect.unite(m_absolutePaintRect);
     // Make sure we are not holding on to a smaller rendering.
     clearResult();
     m_absolutePaintRect = intPaintRect;
 }
 
 void FilterEffect::clearResult()
 {
     m_absolutePaintRect = IntRect();
     for (int i = 0; i < 4; i++) {
         m_imageFilters[i] = nullptr;
     }
 }
 
-void FilterEffect::clearResultsRecursive()
-{
-    unsigned size = m_inputEffects.size();
-    for (unsigned i = 0; i < size; ++i)
-        m_inputEffects.at(i).get()->clearResultsRecursive();
-}
-
 Color FilterEffect::adaptColorToOperatingColorSpace(const Color& deviceColor)
 {
     // |deviceColor| is assumed to be DeviceRGB.
     return ColorSpaceUtilities::convertColor(deviceColor, operatingColorSpace());
 }
 
 TextStream& FilterEffect::externalRepresentation(TextStream& ts, int) const
 {
     // FIXME: We should dump the subRegions of the filter primitives here later. This isn't
     // possible at the moment, because we need more detailed informations from the target object.
@@ skipping 102 matching lines @@
     return m_imageFilters[index].get();
 }
 
 void FilterEffect::setImageFilter(ColorSpace colorSpace, bool requiresPMColorValidation, PassRefPtr<SkImageFilter> imageFilter)
 {
     int index = getImageFilterIndex(colorSpace, requiresPMColorValidation);
     m_imageFilters[index] = imageFilter;
 }
 
 } // namespace blink