[LayoutNG] Add writing mode to NGDerivedConstraintSpace

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

Index: third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
index e4ee8b10f3913507521537fbd0dcd8870f8f8604..5c322ab1f21883126bc59982e8cd0d34254331de 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
@@ -40,6 +40,16 @@ enum NGExclusionFlowType {
   ExcludeInlineBoth
 };
 
+enum NGWritingMode {
+  HorizontalTopBottom = 0,
+  VerticalRightLeft = 1,
+  VerticalLeftRight = 2,
+  SidewaysRightLeft = 3,
+  SidewaysLeftRight = 4
+};
+
+enum NGDirection { LeftToRight = 0, RightToLeft = 1 };
+
 class NGExclusion {
  public:
   NGExclusion();
@@ -130,25 +140,6 @@ class CORE_EXPORT NGLayoutOpportunityIterator final {
   NGExclusionFlowType m_avoid;
 };
 
-class CORE_EXPORT NGDerivedConstraintSpace final : NGConstraintSpace {
- public:
-  ~NGDerivedConstraintSpace();
-
-  LayoutUnit inlineOffset() const;
-  LayoutUnit blockOffset() const;
-  LayoutUnit inlineSize() const;
-  LayoutUnit blockSize() const;
-
- private:
-  NGDerivedConstraintSpace();
-
-  LayoutUnit m_inlineOffset;
-  LayoutUnit m_blockOffset;
-  LayoutUnit m_inlineSize;
-  LayoutUnit m_blockSize;
-  NGConstraintSpace* m_original;
-};
-
 }  // namespace blink
 
 #endif  // NGConstraintSpace_h