Merge StyleSheet into CSSStyleSheet.

sky/engine/core/dom/StyleEngine.cpp

Index: sky/engine/core/dom/StyleEngine.cpp
diff --git a/sky/engine/core/dom/StyleEngine.cpp b/sky/engine/core/dom/StyleEngine.cpp
index aa8d3b846c8e62107cfc6a35c750e912e75f86ea..8a3c8b82caca584e4410e886aeac67558c45ccae 100644
--- a/sky/engine/core/dom/StyleEngine.cpp
+++ b/sky/engine/core/dom/StyleEngine.cpp
@@ -145,7 +145,7 @@ TreeScopeStyleSheetCollection* StyleEngine::styleSheetCollectionFor(TreeScope& t
     return it->value.get();
 }
 
-const Vector<RefPtr<StyleSheet> >& StyleEngine::styleSheetsForStyleSheetList(TreeScope& treeScope)
+const Vector<RefPtr<CSSStyleSheet> >& StyleEngine::styleSheetsForStyleSheetList(TreeScope& treeScope)
 {
     if (treeScope == m_document)
         return documentStyleSheetCollection()->styleSheetsForStyleSheetList();
@@ -153,7 +153,7 @@ const Vector<RefPtr<StyleSheet> >& StyleEngine::styleSheetsForStyleSheetList(Tre
     return ensureStyleSheetCollectionFor(treeScope)->styleSheetsForStyleSheetList();
 }
 
-void StyleEngine::modifiedStyleSheet(StyleSheet* sheet)
+void StyleEngine::modifiedStyleSheet(CSSStyleSheet* sheet)
 {
     if (!sheet)
         return;