Fix positioning of CSS reference clips in composited layers.

third_party/WebKit/Source/core/paint/SVGPaintContext.cpp

 /*
  * Copyright (C) 2007, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2009-2010. 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
@@ skipping 108 matching lines @@
             WebCoreCompositeToSkiaComposite(CompositeSourceOver, blendMode), opacity, &compositingBounds));
     }
 }
 
 bool SVGPaintContext::applyClipIfNecessary(SVGResources* resources)
 {
     // resources->clipper() corresponds to the non-prefixed 'clip-path' whereas
     // m_object.style()->clipPath() corresponds to '-webkit-clip-path'.
     // FIXME: We should unify the clip-path and -webkit-clip-path codepaths.
     if (LayoutSVGResourceClipper* clipper = resources ? resources->clipper() : nullptr) {
-        if (!SVGClipPainter(*clipper).prepareEffect(m_object, m_object.objectBoundingBox(), m_object.paintInvalidationRectInLocalSVGCoordinates(), paintInfo().context, m_clipperState))
+        if (!SVGClipPainter(*clipper).prepareEffect(m_object, m_object.objectBoundingBox(),
+            m_object.paintInvalidationRectInLocalSVGCoordinates(), FloatPoint(), paintInfo().context, m_clipperState))
             return false;
         m_clipper = clipper;
     } else {
         ClipPathOperation* clipPathOperation = m_object.style()->clipPath();
         if (clipPathOperation && clipPathOperation->type() == ClipPathOperation::SHAPE) {
             ShapeClipPathOperation* clipPath = toShapeClipPathOperation(clipPathOperation);
             if (!clipPath->isValid())
                 return false;
             m_clipPathRecorder = wrapUnique(new ClipPathRecorder(paintInfo().context, m_object, clipPath->path(m_object.objectBoundingBox())));
         }
@@ skipping 89 matching lines @@
     // though.
     // Additionally, it's not really safe/guaranteed to be correct, as
     // something down the paint pipe may want to farther tweak the color
     // filter, which could yield incorrect results. (Consider just using
     // saveLayer() w/ this color filter explicitly instead.)
     paint.setColorFilter(sk_ref_sp(paintInfo.context.colorFilter()));
     return true;
 }
 
 } // namespace blink