[LayoutNG] Initial support for multicol, introducing NGBlockBreakToken.

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/LayoutBlock.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/ng/ng_constraint_space_builder.h"
 #include "core/layout/ng/ng_layout_opportunity_iterator.h"
 
 namespace blink {
 
 NGConstraintSpace::NGConstraintSpace(
     NGWritingMode writing_mode,
     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,
     bool is_inline_direction_triggers_scrollbar,
     bool is_block_direction_triggers_scrollbar,
     NGFragmentationType block_direction_fragmentation_type,
     bool is_new_fc,
     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),
       is_inline_direction_triggers_scrollbar_(
           is_inline_direction_triggers_scrollbar),
       is_block_direction_triggers_scrollbar_(
           is_block_direction_triggers_scrollbar),
       block_direction_fragmentation_type_(block_direction_fragmentation_type),
       is_new_fc_(is_new_fc),
       writing_mode_(writing_mode),
@@ skipping 71 matching lines @@
 
 String NGConstraintSpace::ToString() const {
   return String::format("%s,%s %sx%s",
                         offset_.inline_offset.toString().ascii().data(),
                         offset_.block_offset.toString().ascii().data(),
                         AvailableSize().inline_size.toString().ascii().data(),
                         AvailableSize().block_size.toString().ascii().data());
 }
 
 }  // namespace blink