Fix CSS reference filters with negative transformed children.

cc/layers/layer_impl.cc

Index: cc/layers/layer_impl.cc
diff --git a/cc/layers/layer_impl.cc b/cc/layers/layer_impl.cc
index 3d773b91d9b7cc3094b2fd662195a1d3a0d8a0ad..87ffd47cee559b58db16d1aa254c9f2fe607916f 100644
--- a/cc/layers/layer_impl.cc
+++ b/cc/layers/layer_impl.cc
@@ -823,6 +823,10 @@ bool LayerImpl::FilterAnimationBoundsForBox(const gfx::BoxF& box,
                                                          bounds);
 }
 
+void LayerImpl::SetFiltersOrigin(const gfx::PointF& filters_origin) {
+  filters_origin_ = filters_origin;
+}
+
 bool LayerImpl::TransformAnimationBoundsForBox(const gfx::BoxF& box,
                                                gfx::BoxF* bounds) const {
   return GetAnimationHost()->TransformAnimationBoundsForBox(element_id(), box,