Remove REM units.

sky/engine/core/css/resolver/ElementResolveContext.cpp

Index: sky/engine/core/css/resolver/ElementResolveContext.cpp
diff --git a/sky/engine/core/css/resolver/ElementResolveContext.cpp b/sky/engine/core/css/resolver/ElementResolveContext.cpp
index b3e85b2176a8733d8f570e6349cee684c1beb35b..fe7a7905a42e7cd8309e56853c360e6e2c2654ae 100644
--- a/sky/engine/core/css/resolver/ElementResolveContext.cpp
+++ b/sky/engine/core/css/resolver/ElementResolveContext.cpp
@@ -31,7 +31,6 @@ namespace blink {
 ElementResolveContext::ElementResolveContext(const Document& document)
     : m_element(nullptr)
     , m_parentNode(nullptr)
-    , m_rootElementStyle(document.documentElement() ? document.documentElement()->renderStyle() : document.renderStyle())
     , m_distributedToInsertionPoint(false)
 {
 }
@@ -43,13 +42,6 @@ ElementResolveContext::ElementResolveContext(Element& element)
     NodeRenderingTraversal::ParentDetails parentDetails;
     m_parentNode = NodeRenderingTraversal::parent(&element, &parentDetails);
     m_distributedToInsertionPoint = parentDetails.insertionPoint();
-
-    const Document& document = element.document();
-    Node* documentElement = document.documentElement();
-    RenderStyle* documentStyle = document.renderStyle();
-    m_rootElementStyle = documentElement && element != documentElement ? documentElement->renderStyle() : documentStyle;
-    if (!m_rootElementStyle)
-        m_rootElementStyle = documentStyle;
 }
 
 } // namespace blink