Position adjustment for composited scrolling is not needed if the layer has box decorations.

Source/web/LinkHighlight.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 188 matching lines @@
     // of the paint invalidation container not being composited.
     if (!paintInvalidationContainer->layer()->compositedDeprecatedPaintLayerMapping() && !paintInvalidationContainer->layer()->groupedMapping())
         return false;
 
     // Get quads for node in absolute coordinates.
     Vector<FloatQuad> quads;
     computeQuads(*m_node, quads);
     ASSERT(quads.size());
     Path newPath;
 
-    FloatPoint positionAdjustForCompositedScrolling = IntPoint(m_currentGraphicsLayer->offsetFromLayoutObject());
-
     for (size_t quadIndex = 0; quadIndex < quads.size(); ++quadIndex) {
         FloatQuad absoluteQuad = quads[quadIndex];
 
-        // FIXME: this hack should not be necessary. It's a consequence of the fact that composited layers for scrolling are represented
-        // differently in Blink than other composited layers.
-        if (paintInvalidationContainer->layer()->needsCompositedScrolling() && m_node->layoutObject() != paintInvalidationContainer)
-            absoluteQuad.move(-positionAdjustForCompositedScrolling.x(), -positionAdjustForCompositedScrolling.y());
-
         // Transform node quads in target absolute coords to local coordinates in the compositor layer.
         FloatQuad transformedQuad;
         convertTargetSpaceQuadToCompositedLayer(absoluteQuad, m_node->layoutObject(), paintInvalidationContainer, transformedQuad);
 
         // FIXME: for now, we'll only use rounded paths if we have a single node quad. The reason for this is that
         // we may sometimes get a chain of adjacent boxes (e.g. for text nodes) which end up looking like sausage
         // links: these should ideally be merged into a single rect before creating the path, but that's
         // another CL.
         if (quads.size() == 1 && transformedQuad.isRectilinear()
             && !m_owningWebViewImpl->settingsImpl()->mockGestureTapHighlightsEnabled()) {
@@ skipping 132 matching lines @@
     // Make sure we update geometry on the next callback from WebViewImpl::layout().
     m_geometryNeedsUpdate = true;
 }
 
 WebLayer* LinkHighlight::layer()
 {
     return clipLayer();
 }
 
 } // namespace blink