2 files changed, 32 insertions, 0 deletions
diff --git a/WebCore/rendering/style/RenderStyle.cpp b/WebCore/rendering/style/RenderStyle.cpp
index a6e7d59..0ea3673 100644
--- a/WebCore/rendering/style/RenderStyle.cpp
+++ b/WebCore/rendering/style/RenderStyle.cpp
@@ -1332,6 +1332,36 @@ Length RenderStyle::marginEndUsing(const RenderStyle* otherStyle) const
     return otherStyle->isLeftToRightDirection() ? marginBottom() : marginTop();
 }
 
+void RenderStyle::setMarginStart(Length margin)
+{
+    if (isHorizontalWritingMode()) {
+        if (isLeftToRightDirection())
+            setMarginLeft(margin);
+        else
+            setMarginRight(margin);
+    } else {
+        if (isLeftToRightDirection())
+            setMarginTop(margin);
+        else
+            setMarginBottom(margin);
+    }
+}
+
+void RenderStyle::setMarginEnd(Length margin)
+{
+    if (isHorizontalWritingMode()) {
+        if (isLeftToRightDirection())
+            setMarginRight(margin);
+        else
+            setMarginLeft(margin);
+    } else {
+        if (isLeftToRightDirection())
+            setMarginBottom(margin);
+        else
+            setMarginTop(margin);
+    }
+}
+
 Length RenderStyle::paddingBefore() const
 {
     switch (writingMode()) {
diff --git a/WebCore/rendering/style/RenderStyle.h b/WebCore/rendering/style/RenderStyle.h
index 75dc58f..c206acd 100644
--- a/WebCore/rendering/style/RenderStyle.h
+++ b/WebCore/rendering/style/RenderStyle.h
@@ -985,6 +985,8 @@ public:
     void setMarginBottom(Length v) { SET_VAR(surround, margin.m_bottom, v) }
     void setMarginLeft(Length v) { SET_VAR(surround, margin.m_left, v) }
     void setMarginRight(Length v) { SET_VAR(surround, margin.m_right, v) }
+    void setMarginStart(Length);
+    void setMarginEnd(Length);
 
     void resetPadding() { SET_VAR(surround, padding, LengthBox(Auto)) }
     void setPaddingBox(const LengthBox& b) { SET_VAR(surround, padding, b) }