Fix CSS reference filters with negative transformed children.

cc/ipc/quads_struct_traits.h

 // Copyright 2016 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.
 
 #ifndef CC_IPC_QUADS_STRUCT_TRAITS_H_
 #define CC_IPC_QUADS_STRUCT_TRAITS_H_
 
 #include "cc/ipc/filter_operation_struct_traits.h"
 #include "cc/ipc/filter_operations_struct_traits.h"
 #include "cc/ipc/quads.mojom.h"
@@ skipping 152 matching lines @@
         cc::RenderPassDrawQuad::MaterialCast(&input);
     return quad->filters;
   }
 
   static const gfx::Vector2dF& filters_scale(const cc::DrawQuad& input) {
     const cc::RenderPassDrawQuad* quad =
         cc::RenderPassDrawQuad::MaterialCast(&input);
     return quad->filters_scale;
   }
 
+  static const gfx::PointF& filters_origin(const cc::DrawQuad& input) {
+    const cc::RenderPassDrawQuad* quad =
+        cc::RenderPassDrawQuad::MaterialCast(&input);
+    return quad->filters_origin;
+  }
+
   static const cc::FilterOperations& background_filters(
       const cc::DrawQuad& input) {
     const cc::RenderPassDrawQuad* quad =
         cc::RenderPassDrawQuad::MaterialCast(&input);
     return quad->background_filters;
   }
 
   static bool Read(cc::mojom::RenderPassQuadStateDataView data,
                    cc::DrawQuad* out);
 };
@@ skipping 288 matching lines @@
       dq.shared_quad_state = current_sqs;
     return dq;
   }
 
   static size_t GetSize(const cc::QuadList& input) { return input.size(); }
 };
 
 }  // namespace mojo
 
 #endif  // CC_IPC_QUADS_STRUCT_TRAITS_H_