cc: Move background filters to the effect tree

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 64f84e4166308ead743dbd391ca61338a8a3e675..a73a0e8fabe5db245419287e5183bbbb545c3536 100644
--- a/cc/layers/layer_impl.cc
+++ b/cc/layers/layer_impl.cc
@@ -347,7 +347,6 @@ void LayerImpl::PushPropertiesTo(LayerImpl* layer) {
   layer->clip_tree_index_ = clip_tree_index_;
   layer->scroll_tree_index_ = scroll_tree_index_;
   layer->filters_ = filters_;
-  layer->background_filters_ = background_filters_;
   layer->sorting_context_id_ = sorting_context_id_;
   layer->has_will_change_transform_hint_ = has_will_change_transform_hint_;
 
@@ -806,15 +805,6 @@ bool LayerImpl::HasPotentiallyRunningFilterAnimation() const {
   return layer_tree_impl_->HasPotentiallyRunningFilterAnimation(this);
 }
 
-void LayerImpl::SetBackgroundFilters(
-    const FilterOperations& filters) {
-  if (background_filters_ == filters)
-    return;
-
-  background_filters_ = filters;
-  NoteLayerPropertyChanged();
-}
-
 void LayerImpl::SetMasksToBounds(bool masks_to_bounds) {
   if (masks_to_bounds_ == masks_to_bounds)
     return;