Fix CSS reference filters with negative transformed children.

cc/layers/layer.cc

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/layer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 459 matching lines @@
 
 void Layer::SetBackgroundFilters(const FilterOperations& filters) {
   DCHECK(IsPropertyChangeAllowed());
   if (inputs_.background_filters == filters)
     return;
   inputs_.background_filters = filters;
   SetLayerPropertyChanged();
   SetNeedsCommit();
 }
 
+void Layer::SetFiltersOrigin(const gfx::PointF& filters_origin) {
+  DCHECK(IsPropertyChangeAllowed());
+  if (inputs_.filters_origin == filters_origin)
+    return;
+  inputs_.filters_origin = filters_origin;
+  SetSubtreePropertyChanged();
+  SetNeedsCommit();
+}
+
 void Layer::SetOpacity(float opacity) {
   DCHECK(IsPropertyChangeAllowed());
   DCHECK_GE(opacity, 0.f);
   DCHECK_LE(opacity, 1.f);
 
   if (inputs_.opacity == opacity)
     return;
   // We need to force a property tree rebuild when opacity changes from 1 to a
   // non-1 value or vice-versa as render surfaces can change.
   bool force_rebuild = opacity == 1.f || inputs_.opacity == 1.f;
@@ skipping 1383 matching lines @@
   DCHECK_NE(transform_tree_index_, TransformTree::kInvalidNodeId);
   return draw_property_utils::ScreenSpaceTransform(
       this, layer_tree_->property_trees()->transform_tree);
 }
 
 LayerTree* Layer::GetLayerTree() const {
   return layer_tree_;
 }
 
 }  // namespace cc