Revert of Collect active stylesheets and and apply asynchronously.

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

Index: third_party/WebKit/Source/core/dom/StyleSheetCollection.cpp
diff --git a/third_party/WebKit/Source/core/dom/StyleSheetCollection.cpp b/third_party/WebKit/Source/core/dom/StyleSheetCollection.cpp
index 9dcd328264fefc2a37b4acf5a8ed2d4e97332f78..f25b2d62a3acf2f810fa14384198e67424fd8dd2 100644
--- a/third_party/WebKit/Source/core/dom/StyleSheetCollection.cpp
+++ b/third_party/WebKit/Source/core/dom/StyleSheetCollection.cpp
@@ -29,7 +29,6 @@
 #include "core/dom/StyleSheetCollection.h"
 
 #include "core/css/CSSStyleSheet.h"
-#include "core/css/RuleSet.h"
 
 namespace blink {
 
@@ -53,9 +52,20 @@
   ::blink::swap(m_styleSheetsForStyleSheetList, sheets, this);
 }
 
-void StyleSheetCollection::appendActiveStyleSheet(
-    const ActiveStyleSheet& activeSheet) {
-  m_activeAuthorStyleSheets.append(activeSheet);
+void StyleSheetCollection::appendActiveStyleSheet(CSSStyleSheet* sheet) {
+  m_activeAuthorStyleSheets.append(sheet);
+}
+
+void StyleSheetCollection::appendActiveStyleSheets(
+    const HeapVector<Member<CSSStyleSheet>>& sheets) {
+  m_activeAuthorStyleSheets.appendVector(sheets);
+}
+
+void StyleSheetCollection::appendActiveStyleSheets(
+    const HeapVector<TraceWrapperMember<CSSStyleSheet>>& sheets) {
+  for (CSSStyleSheet* sheet : sheets) {
+    m_activeAuthorStyleSheets.append(sheet);
+  }
 }
 
 void StyleSheetCollection::appendSheetForList(StyleSheet* sheet) {