Fix orthogonal mode legacy mismatch

third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc b/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc
index c9b65792a51ee43716898deb1b9603697c680471..a7e091d0322ab2089f50d2f3a93173e19e4e948a 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc
@@ -4,6 +4,7 @@
 
 #include "core/layout/ng/ng_writing_mode.h"
 
+#include "core/layout/LayoutObject.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
@@ -22,4 +23,8 @@ NGWritingMode FromPlatformWritingMode(WritingMode mode) {
   }
 }
 
+bool IsParallelWritingMode(NGWritingMode a, NGWritingMode b) {
+  return (a == kHorizontalTopBottom) == (b == kHorizontalTopBottom);
+}
+
 }  // namespace blink