Backend for css rule tracking

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

Index: third_party/WebKit/Source/core/dom/StyleEngine.h
diff --git a/third_party/WebKit/Source/core/dom/StyleEngine.h b/third_party/WebKit/Source/core/dom/StyleEngine.h
index 32145eb61a1b556bc49a1287c94b064164576a6c..4a3c641473fd20eafcf9046e35889be5069f8d19 100644
--- a/third_party/WebKit/Source/core/dom/StyleEngine.h
+++ b/third_party/WebKit/Source/core/dom/StyleEngine.h
@@ -37,6 +37,7 @@
 #include "core/css/invalidation/StyleInvalidator.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/css/resolver/StyleResolverStats.h"
+#include "core/css/resolver/StyleRuleUsageTracker.h"

[caseq, 2016/10/27 20:59:55]

forward-declare instead.

[valih, 2016/10/27 21:41:16]

Done.

 #include "core/dom/Document.h"
 #include "core/dom/DocumentOrderedList.h"
 #include "core/dom/DocumentStyleSheetCollection.h"
@@ -165,6 +166,8 @@ class CORE_EXPORT StyleEngine final
   }
   void resetAuthorStyle(TreeScope&);
 
+  void setRuleUsageTracker(Member<StyleRuleUsageTracker>);

[caseq, 2016/10/27 20:59:55]

StyleRuleUsageTracker*, drop Member<>

[valih, 2016/10/27 21:41:16]

Done.

+
   StyleResolver* resolver() const { return m_resolver.get(); }
 
   StyleResolver& ensureResolver() {
@@ -299,6 +302,8 @@ class CORE_EXPORT StyleEngine final
   HeapVector<Member<CSSStyleSheet>> m_injectedAuthorStyleSheets;
   Member<CSSStyleSheet> m_inspectorStyleSheet;
 
+  Member<StyleRuleUsageTracker> m_tracker;
+
   Member<DocumentStyleSheetCollection> m_documentStyleSheetCollection;
 
   typedef HeapHashMap<WeakMember<TreeScope>,