Make NGLayoutOpportunityIterator to support origin_point.

third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_iterator.h

Index: third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_iterator.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_iterator.h b/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_iterator.h
index da9c9432df65902381fd5bc6e512fe43b59c851e..456f33ddf3587841b7a41d7e3c503ce614072f61 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_iterator.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_layout_opportunity_iterator.h
@@ -33,8 +33,8 @@ class CORE_EXPORT NGLayoutOpportunityIterator final
   //                     text fragment for example.
   NGLayoutOpportunityIterator(
       NGConstraintSpace* space,
-      const NGLogicalOrigin origin_point = NGLogicalOrigin(),
-      const NGLogicalLeader leader_point = NGLogicalLeader());
+      const NGLogicalOffset origin_point = NGLogicalOffset(),
+      const NGLogicalOffset leader_point = NGLogicalOffset());
 
   // Gets the next Layout Opportunity or nullptr if the search is exhausted.
   // TODO(chrome-layout-team): Refactor with using C++ <iterator> library.
@@ -57,8 +57,7 @@ class CORE_EXPORT NGLayoutOpportunityIterator final
   }
 
   Member<NGConstraintSpace> constraint_space_;
-  const NGLogicalOrigin origin_point_;
-  const NGLogicalLeader leader_point_;
+  const NGLogicalOffset leader_point_;
 
   NGLayoutOpportunities opportunities_;
   NGLayoutOpportunities::const_iterator opportunity_iter_;