Current work-in-progress crbug.com/567021

third_party/WebKit/Source/core/dom/StyleSheetCollection.h

Index: third_party/WebKit/Source/core/dom/StyleSheetCollection.h
diff --git a/third_party/WebKit/Source/core/dom/StyleSheetCollection.h b/third_party/WebKit/Source/core/dom/StyleSheetCollection.h
index d79f04b5c9e9c49b478f313b755e5e39da0d3a1a..947009e9c943246a215a65dea190cdb320fdb02a 100644
--- a/third_party/WebKit/Source/core/dom/StyleSheetCollection.h
+++ b/third_party/WebKit/Source/core/dom/StyleSheetCollection.h
@@ -33,13 +33,13 @@
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/TraceWrapperMember.h"
 #include "core/CoreExport.h"
+#include "core/css/ActiveStyleSheets.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Allocator.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
-class CSSStyleSheet;
 class StyleSheet;
 
 class CORE_EXPORT StyleSheetCollection
@@ -53,7 +53,7 @@ class CORE_EXPORT StyleSheetCollection
 
   static StyleSheetCollection* create() { return new StyleSheetCollection; }
 
-  const HeapVector<Member<CSSStyleSheet>>& activeAuthorStyleSheets() const {
+  const ActiveStyleSheetVector& activeAuthorStyleSheets() const {
     return m_activeAuthorStyleSheets;
   }
   const HeapVector<TraceWrapperMember<StyleSheet>>&
@@ -63,10 +63,7 @@ class CORE_EXPORT StyleSheetCollection
 
   void swap(StyleSheetCollection&);
   void swapSheetsForSheetList(HeapVector<Member<StyleSheet>>&);
-  void appendActiveStyleSheet(CSSStyleSheet*);
-  void appendActiveStyleSheets(const HeapVector<Member<CSSStyleSheet>>&);
-  void appendActiveStyleSheets(
-      const HeapVector<TraceWrapperMember<CSSStyleSheet>>&);
+  void appendActiveStyleSheet(const ActiveStyleSheet&);
   void appendSheetForList(StyleSheet*);
 
   DECLARE_VIRTUAL_TRACE();
@@ -78,7 +75,7 @@ class CORE_EXPORT StyleSheetCollection
   StyleSheetCollection();
 
   HeapVector<TraceWrapperMember<StyleSheet>> m_styleSheetsForStyleSheetList;
-  HeapVector<Member<CSSStyleSheet>> m_activeAuthorStyleSheets;
+  ActiveStyleSheetVector m_activeAuthorStyleSheets;
 };
 
 }  // namespace blink