Use Initial Containing Block size for vertical

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

Index: third_party/WebKit/Source/core/layout/ng/ng_constraint_space_builder.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space_builder.h b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space_builder.h
index 4427826f450d27334c536f458443a0fd9fbb8407..a9918a416eb3994da590ab2fa3cadc021079c178 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space_builder.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space_builder.h
@@ -22,6 +22,8 @@ class CORE_EXPORT NGConstraintSpaceBuilder final
   NGConstraintSpaceBuilder& SetPercentageResolutionSize(
       NGLogicalSize percentage_resolution_size);
 
+  NGConstraintSpaceBuilder& SetInitialContainingBlockSize(NGPhysicalSize);
+
   NGConstraintSpaceBuilder& SetFragmentainerSpaceAvailable(LayoutUnit space) {
     fragmentainer_space_available_ = space;
     return *this;
@@ -62,8 +64,11 @@ class CORE_EXPORT NGConstraintSpaceBuilder final
   DEFINE_INLINE_TRACE() {}
 
  private:
+  // Relative to parent_writing_mode_.
   NGLogicalSize available_size_;
+  // Relative to parent_writing_mode_.
   NGLogicalSize percentage_resolution_size_;
+  NGPhysicalSize initial_containing_block_size_;
   LayoutUnit fragmentainer_space_available_;
 
   unsigned writing_mode_ : 2;