Merge StyleSheet into CSSStyleSheet.

sky/engine/core/dom/Document.cpp

Index: sky/engine/core/dom/Document.cpp
diff --git a/sky/engine/core/dom/Document.cpp b/sky/engine/core/dom/Document.cpp
index 07f7220096114a7fde825cd76268166a933a1dd9..1743ef926d6923934b15d3267a9abf149a8b99df 100644
--- a/sky/engine/core/dom/Document.cpp
+++ b/sky/engine/core/dom/Document.cpp
@@ -2715,7 +2715,7 @@ DocumentLifecycleNotifier& Document::lifecycleNotifier()
     return static_cast<DocumentLifecycleNotifier&>(LifecycleContext<Document>::lifecycleNotifier());
 }
 
-void Document::removedStyleSheet(StyleSheet* sheet)
+void Document::removedStyleSheet(CSSStyleSheet* sheet)
 {
     // If we're in document teardown, then we don't need this notification of our sheet's removal.
     // styleResolverChanged() is needed even when the document is inactive so that
@@ -2725,7 +2725,7 @@ void Document::removedStyleSheet(StyleSheet* sheet)
     styleResolverChanged();
 }
 
-void Document::modifiedStyleSheet(StyleSheet* sheet)
+void Document::modifiedStyleSheet(CSSStyleSheet* sheet)
 {
     // If we're in document teardown, then we don't need this notification of our sheet's removal.
     // styleResolverChanged() is needed even when the document is inactive so that