Current work-in-progress crbug.com/567021

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

Index: third_party/WebKit/Source/core/dom/DocumentStyleSheetCollection.h
diff --git a/third_party/WebKit/Source/core/dom/DocumentStyleSheetCollection.h b/third_party/WebKit/Source/core/dom/DocumentStyleSheetCollection.h
index ef7dac8f4a6bf255253c7e9a000de15e99e35530..0493d39a3503eafc15d4c63ea631d7a5466e5070 100644
--- a/third_party/WebKit/Source/core/dom/DocumentStyleSheetCollection.h
+++ b/third_party/WebKit/Source/core/dom/DocumentStyleSheetCollection.h
@@ -34,7 +34,6 @@
 namespace blink {
 
 class DocumentStyleSheetCollector;
-class StyleEngine;
 class TreeScope;
 
 class DocumentStyleSheetCollection final : public TreeScopeStyleSheetCollection {
@@ -45,8 +44,9 @@ public:
         return new DocumentStyleSheetCollection(treeScope);
     }
 
-    void updateActiveStyleSheets(StyleEngine&, StyleResolverUpdateMode);
-    void collectStyleSheets(StyleEngine&, DocumentStyleSheetCollector&);
+    void updateViewport();
+    void updateActiveStyleSheets();
+    void collectStyleSheets(DocumentStyleSheetCollector&);
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
@@ -58,7 +58,7 @@ public:
 private:
     explicit DocumentStyleSheetCollection(TreeScope&);
 
-    void collectStyleSheetsFromCandidates(StyleEngine&, DocumentStyleSheetCollector&);
+    void collectStyleSheetsFromCandidates(DocumentStyleSheetCollector&);
 };
 
 } // namespace blink