Split StyleSurroundData::offset into separate members.

third_party/WebKit/Source/platform/LengthBox.h

Index: third_party/WebKit/Source/platform/LengthBox.h
diff --git a/third_party/WebKit/Source/platform/LengthBox.h b/third_party/WebKit/Source/platform/LengthBox.h
index a57d28719391f314e763e540cf51b9c755d727c0..075527936174977a2dd20fdf178375c04ca345c2 100644
--- a/third_party/WebKit/Source/platform/LengthBox.h
+++ b/third_party/WebKit/Source/platform/LengthBox.h
@@ -53,6 +53,22 @@ class PLATFORM_EXPORT LengthBox {
         m_top(Length(t, Fixed)),
         m_bottom(Length(b, Fixed)) {}
 
+  // For use in ComputedStyle.h
+  static const Length& logicalLeft(WritingMode,
+                                   const Length& left,
+                                   const Length& top);
+  static const Length& logicalRight(WritingMode,
+                                    const Length& right,
+                                    const Length& bottom);
+  static const Length& before(WritingMode,
+                              const Length& top,
+                              const Length& left,
+                              const Length& right);
+  static const Length& after(WritingMode,
+                             const Length& bottom,
+                             const Length& left,
+                             const Length& right);
+
   const Length& left() const { return m_left; }
   const Length& right() const { return m_right; }
   const Length& top() const { return m_top; }