Index: third_party/WebKit/Source/core/layout/ng/ng_writing_mode.h |
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.h b/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.h |
index 4ada7d2778299fbf920cdac3174ff766f73cabaa..18b9108621b60da3e250dab6e35448a745512ee9 100644 |
--- a/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.h |
+++ b/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.h |
@@ -20,6 +20,10 @@ enum NGWritingMode { |
CORE_EXPORT NGWritingMode FromPlatformWritingMode(WritingMode); |
+// Whether the child and the containing block are parallel to each other. |
+// Example: vertical-rl and vertical-lr |
+bool IsParallelWritingMode(NGWritingMode a, NGWritingMode b); |
+ |
} // namespace blink |
#endif // NGWritingMode_h |