Backend for css rule tracking

third_party/WebKit/Source/core/inspector/InspectorCSSAgent.h

Index: third_party/WebKit/Source/core/inspector/InspectorCSSAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.h b/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.h
index caf1477186dd15ce7883a29d289ffa05fbdef359..3a75158a0bdba101fb33031b46af22ae5408ea39 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.h
@@ -58,6 +58,7 @@ class InspectorResourceContentLoader;
 class MediaList;
 class Node;
 class LayoutObject;
+class StyleRuleUsageTracker;
 
 class CORE_EXPORT InspectorCSSAgent final
     : public InspectorBaseAgent<protocol::CSS::Metainfo>,
@@ -123,8 +124,12 @@ class CORE_EXPORT InspectorCSSAgent final
   void mediaQueryResultChanged();
 
   void activeStyleSheetsUpdated(Document*);
+  void didCommitLoad(LocalFrame*, DocumentLoader*);
   void documentDetached(Document*);
   void fontsUpdated();
+  void getUnusedRules(
+      std::unique_ptr<protocol::Array<protocol::CSS::RuleUsage>>*);
+  void setTrackerStatus(bool enable);
 
   void enable(std::unique_ptr<EnableCallback>) override;
   void disable(ErrorString*) override;
@@ -209,6 +214,12 @@ class CORE_EXPORT InspectorCSSAgent final
       int nodeId,
       Maybe<protocol::Array<String>>* backgroundColors) override;
 
+  void setSelectorRecording(ErrorString*, bool enable) override;
+
+  void getRuleList(ErrorString*,
+                   std::unique_ptr<protocol::Array<protocol::CSS::RuleUsage>>*
+                       result) override;
+
   void collectMediaQueriesFromRule(CSSRule*,
                                    protocol::Array<protocol::CSS::CSSMedia>*);
   void collectMediaQueriesFromStyleSheet(
@@ -304,6 +315,8 @@ class CORE_EXPORT InspectorCSSAgent final
   String detectOrigin(CSSStyleSheet* pageStyleSheet, Document* ownerDocument);
 
   std::unique_ptr<protocol::CSS::CSSRule> buildObjectForRule(CSSStyleRule*);
+  std::unique_ptr<protocol::CSS::RuleUsage> buildObjectForRuleUsage(CSSRule*,
+                                                                    bool);
   std::unique_ptr<protocol::Array<protocol::CSS::RuleMatch>>
   buildArrayForMatchedRuleList(CSSRuleList*, Element*, PseudoId);
   std::unique_ptr<protocol::CSS::CSSStyle> buildObjectForAttributesStyle(
@@ -357,6 +370,8 @@ class CORE_EXPORT InspectorCSSAgent final
   NodeToInspectorStyleSheet m_nodeToInspectorStyleSheet;
   NodeIdToForcedPseudoState m_nodeIdToForcedPseudoState;
 
+  Member<StyleRuleUsageTracker> m_tracker;
+
   Member<CSSStyleSheet> m_inspectorUserAgentStyleSheet;
 
   int m_resourceContentLoaderClientId;