[LayoutNG] Allow block-flow layout to be fragmented using new approach.

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

Index: third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
index 40b7ad094bd356e9d6d0583f92d3535c465be507..7a76e30b7e08eb940ff92c1ef9fb0d40014d42a2 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
@@ -25,6 +25,7 @@ NGConstraintSpace::NGConstraintSpace(
     bool is_block_direction_triggers_scrollbar,
     NGFragmentationType block_direction_fragmentation_type,
     bool is_new_fc,
+    bool is_anonymous,
     const NGMarginStrut& margin_strut,
     const NGLogicalOffset& bfc_offset,
     const std::shared_ptr<NGExclusions>& exclusions)
@@ -41,6 +42,7 @@ NGConstraintSpace::NGConstraintSpace(
           is_block_direction_triggers_scrollbar),
       block_direction_fragmentation_type_(block_direction_fragmentation_type),
       is_new_fc_(is_new_fc),
+      is_anonymous_(is_anonymous),
       writing_mode_(writing_mode),
       direction_(static_cast<unsigned>(direction)),
       margin_strut_(margin_strut),