Remove webkit-margin-collapse

sky/engine/core/rendering/style/RenderStyle.cpp

Index: sky/engine/core/rendering/style/RenderStyle.cpp
diff --git a/sky/engine/core/rendering/style/RenderStyle.cpp b/sky/engine/core/rendering/style/RenderStyle.cpp
index f087b22bc479bb2958aa84a56b6a8af7f1354c8a..67497590fa461c9073c630c589566731cc5f829b 100644
--- a/sky/engine/core/rendering/style/RenderStyle.cpp
+++ b/sky/engine/core/rendering/style/RenderStyle.cpp
@@ -319,9 +319,7 @@ bool RenderStyle::diffNeedsFullLayoutAndPaintInvalidation(const RenderStyle& oth
     }
 
     if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
-        if (rareNonInheritedData->marginBeforeCollapse != other.rareNonInheritedData->marginBeforeCollapse
-            || rareNonInheritedData->marginAfterCollapse != other.rareNonInheritedData->marginAfterCollapse
-            || rareNonInheritedData->textOverflow != other.rareNonInheritedData->textOverflow
+        if (rareNonInheritedData->textOverflow != other.rareNonInheritedData->textOverflow
             || rareNonInheritedData->m_wrapFlow != other.rareNonInheritedData->m_wrapFlow
             || rareNonInheritedData->m_wrapThrough != other.rareNonInheritedData->m_wrapThrough
             || rareNonInheritedData->m_order != other.rareNonInheritedData->m_order