[LayoutNG] Remove derived constraint spaces from opportunity iterator.

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

Index: third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_tree_node.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_tree_node.cc b/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_tree_node.cc
index b6e87f5611da6b3c75ecfea43dcb0e8745eb866f..8762a06fe65defffd9209f80bcf9dcaccd50444c 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_tree_node.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_tree_node.cc
@@ -10,19 +10,18 @@
 namespace blink {
 
 NGLayoutOpportunityTreeNode::NGLayoutOpportunityTreeNode(
-    const NGConstraintSpace* space)
-    : space(space) {
-  exclusion_edge.start = space->Offset().inline_offset;
-  exclusion_edge.end = exclusion_edge.start + space->Size().inline_size;
+    const NGLogicalRect opportunity)
+    : opportunity(opportunity) {
+  exclusion_edge.start = opportunity.offset.inline_offset;
+  exclusion_edge.end = exclusion_edge.start + opportunity.size.inline_size;
 }
 
 NGLayoutOpportunityTreeNode::NGLayoutOpportunityTreeNode(
-    NGConstraintSpace* space,
+    const NGLogicalRect opportunity,
     NGEdge exclusion_edge)
-    : space(space), exclusion_edge(exclusion_edge) {}
+    : opportunity(opportunity), exclusion_edge(exclusion_edge) {}
 
 DEFINE_TRACE(NGLayoutOpportunityTreeNode) {
-  visitor->trace(space);
   visitor->trace(left);
   visitor->trace(bottom);
   visitor->trace(right);