[layoutng] Create a more correct constraint space for children

third_party/WebKit/Source/core/layout/ng/ng_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_constraint_space.h"
 
 #include "core/layout/LayoutBox.h"
 #include "core/style/ComputedStyle.h"
 
 namespace blink {
 
 NGConstraintSpace::NGConstraintSpace(NGLogicalSize container_size) {
   container_size_ = container_size;
   inline_triggers_scrollbar_ = 0;
   block_triggers_scrollbar_ = 0;
   fixed_inline_size_ = 0;
   fixed_block_size_ = 0;
   block_fragmentation_type_ = FragmentNone;
 }
 
+NGConstraintSpace::NGConstraintSpace(const NGConstraintSpace& other,
+                                     NGLogicalSize container_size)
+    : NGConstraintSpace(container_size) {
+  exclusions_ = other.exclusions_;
+}
+
 NGConstraintSpace NGConstraintSpace::fromLayoutObject(const LayoutBox& child) {
   bool fixedInline = false, fixedBlock = false;
   // XXX for orthogonal writing mode this is not right
   LayoutUnit container_logical_width =
       std::max(LayoutUnit(), child.containingBlockLogicalWidthForContent());
   // XXX Make sure this height is correct
   LayoutUnit container_logical_height =
       child.containingBlockLogicalHeightForContent(ExcludeMarginBorderPadding);
   if (child.hasOverrideLogicalContentWidth()) {
     container_logical_width = child.overrideLogicalContentWidth();
@@ skipping 41 matching lines @@
 
 NGLayoutOpportunityIterator NGConstraintSpace::layoutOpportunities(
     unsigned clear,
     bool for_inline_or_bfc) const {
   // TODO(eae): Implement.
   NGLayoutOpportunityIterator iterator(this, clear, for_inline_or_bfc);
   return iterator;
 }
 
 }  // namespace blink