[LayoutNG] Initial support for multicol, introducing NGBlockBreakToken.

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 366a40c6ef3867f5a28eaaf60872e041368fc9ce..f3921612ec2290e0acd8d477172985e08c7a931f 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
@@ -16,6 +16,7 @@ NGConstraintSpace::NGConstraintSpace(
     TextDirection direction,
     NGLogicalSize available_size,
     NGLogicalSize percentage_resolution_size,
+    LayoutUnit fragmentainer_space_available,
     bool is_fixed_size_inline,
     bool is_fixed_size_block,
     bool is_shrink_to_fit,
@@ -26,6 +27,7 @@ NGConstraintSpace::NGConstraintSpace(
     const std::shared_ptr<NGExclusions>& exclusions_)
     : available_size_(available_size),
       percentage_resolution_size_(percentage_resolution_size),
+      fragmentainer_space_available_(fragmentainer_space_available),
       is_fixed_size_inline_(is_fixed_size_inline),
       is_fixed_size_block_(is_fixed_size_block),
       is_shrink_to_fit_(is_shrink_to_fit),