Change how NGConstraintSpaceBuilder specified destination space.

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 a9918a416eb3994da590ab2fa3cadc021079c178..61549af0b465dfc9239989189ac5753feba64e9b 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
@@ -44,8 +44,6 @@ class CORE_EXPORT NGConstraintSpaceBuilder final
   NGConstraintSpaceBuilder& SetFragmentationType(NGFragmentationType);
   NGConstraintSpaceBuilder& SetIsNewFormattingContext(bool is_new_fc);
 
-  NGConstraintSpaceBuilder& SetWritingMode(NGWritingMode writing_mode);
-
   NGConstraintSpaceBuilder& SetMarginStrut(const NGMarginStrut& margin_strut);
 
   NGConstraintSpaceBuilder& SetBfcOffset(const NGLogicalOffset& offset) {
@@ -59,7 +57,9 @@ class CORE_EXPORT NGConstraintSpaceBuilder final
   //  - Is within a fragmentation container and needs its fragmentation offset
   //    updated.
   //  - Has its size is determined by its parent layout (flex, abs-pos).
-  NGConstraintSpace* ToConstraintSpace();
+  //
+  // NGWritingMode specifies the writing mode of the generated space.
+  NGConstraintSpace* ToConstraintSpace(NGWritingMode);
 
   DEFINE_INLINE_TRACE() {}
 
@@ -71,7 +71,6 @@ class CORE_EXPORT NGConstraintSpaceBuilder final
   NGPhysicalSize initial_containing_block_size_;
   LayoutUnit fragmentainer_space_available_;
 
-  unsigned writing_mode_ : 2;
   unsigned parent_writing_mode_ : 2;
   unsigned is_fixed_size_inline_ : 1;
   unsigned is_fixed_size_block_ : 1;