Support colors w/ alpha in SVG 'stop' elements and 'feFlood'

Source/platform/graphics/filters/FEFlood.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * 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
@@ skipping 61 matching lines @@
     m_floodOpacity = floodOpacity;
     return true;
 }
 
 void FEFlood::applySoftware()
 {
     ImageBuffer* resultImage = createImageBufferResult();
     if (!resultImage)
         return;
 
-    Color color = colorWithOverrideAlpha(floodColor().rgb(), floodOpacity());
+    Color color = floodColor().combineWithAlpha(floodOpacity());
     resultImage->context()->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()), color);
     FilterEffect::setResultColorSpace(ColorSpaceDeviceRGB);
 }
 
 PassRefPtr<SkImageFilter> FEFlood::createImageFilter(SkiaImageFilterBuilder* builder)
 {
-    Color color = colorWithOverrideAlpha(floodColor().rgb(), floodOpacity());
+    Color color = floodColor().combineWithAlpha(floodOpacity());
 
     SkImageFilter::CropRect rect = getCropRect(builder->cropOffset());
     SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(color.rgb(), SkXfermode::kSrc_Mode));
     return adoptRef(SkColorFilterImageFilter::Create(cf, 0, &rect));
 }
 
 TextStream& FEFlood::externalRepresentation(TextStream& ts, int indent) const
 {
     writeIndent(ts, indent);
     ts << "[feFlood";
     FilterEffect::externalRepresentation(ts);
     ts << " flood-color=\"" << floodColor().nameForRenderTreeAsText() << "\" "
        << "flood-opacity=\"" << floodOpacity() << "\"]\n";
     return ts;
 }
 
 } // namespace WebCore