Initial exclusion aware layout opportunities implementation

third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.cc

 // 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.
 
 #include "core/layout/ng/ng_physical_constraint_space.h"
 
 #include "core/layout/LayoutBox.h"
 #include "core/style/ComputedStyle.h"
 
 namespace blink {
@@ skipping 22 matching lines @@
       fixed_height_(other.fixed_height_),
       width_direction_triggers_scrollbar_(
           other.width_direction_triggers_scrollbar_),
       height_direction_triggers_scrollbar_(
           other.height_direction_triggers_scrollbar_),
       width_direction_fragmentation_type_(
           other.width_direction_fragmentation_type_),
       height_direction_fragmentation_type_(
           other.height_direction_fragmentation_type_) {}
 
-void NGPhysicalConstraintSpace::AddExclusion(const NGExclusion,
+void NGPhysicalConstraintSpace::AddExclusion(const NGExclusion exclusion,
                                              unsigned options) {
-  // TODO(layout-ng): Implement.
+  exclusions_.append(exclusion);
 }
 
-const DoublyLinkedList<const NGExclusion>*
-NGPhysicalConstraintSpace::Exclusions(unsigned options) const {
+const Vector<NGExclusion>& NGPhysicalConstraintSpace::Exclusions(
+    unsigned options) const {
   // TODO(layout-ng): Filter based on options? Perhaps layout Opportunities
   // should filter instead?
-  return &exclusions_;
+  return exclusions_;
 }
 
 }  // namespace blink