Current work-in-progress crbug.com/567021

third_party/WebKit/Source/core/css/RuleFeature.h

Index: third_party/WebKit/Source/core/css/RuleFeature.h
diff --git a/third_party/WebKit/Source/core/css/RuleFeature.h b/third_party/WebKit/Source/core/css/RuleFeature.h
index 4ddb1b69e050c43acf6491e79e45040f91edebd2..980ab6d9dbedd1ac97513ec04e157610bdaa759d 100644
--- a/third_party/WebKit/Source/core/css/RuleFeature.h
+++ b/third_party/WebKit/Source/core/css/RuleFeature.h
@@ -24,6 +24,7 @@
 
 #include "core/CoreExport.h"
 #include "core/css/CSSSelector.h"
+#include "core/css/MediaQueryEvaluator.h"
 #include "core/css/invalidation/InvalidationSet.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
@@ -75,6 +76,7 @@ public:
     bool usesSiblingRules() const { return !siblingRules.isEmpty(); }
     bool usesFirstLineRules() const { return m_metadata.usesFirstLineRules; }
     bool usesWindowInactiveSelector() const { return m_metadata.usesWindowInactiveSelector; }
+    bool needsFullRecalcForRuleSetInvalidation() const { return m_metadata.needsFullRecalcForRuleSetInvalidation; }
 
     unsigned maxDirectAdjacentSelectors() const { return m_metadata.maxDirectAdjacentSelectors; }
 
@@ -107,6 +109,8 @@ public:
 
     HeapVector<RuleFeature> siblingRules;
     HeapVector<RuleFeature> uncommonAttributeRules;
+    MediaQueryResultList viewportDependentMediaQueryResults;
+    MediaQueryResultList deviceDependentMediaQueryResults;
 
 protected:
     InvalidationSet* invalidationSetForSelector(const CSSSelector&, InvalidationType);
@@ -126,6 +130,7 @@ private:
         bool usesWindowInactiveSelector = false;
         bool foundSiblingSelector = false;
         bool foundInsertionPointCrossing = false;
+        bool needsFullRecalcForRuleSetInvalidation = false;
         unsigned maxDirectAdjacentSelectors = 0;
     };
 
@@ -155,6 +160,7 @@ private:
         bool forceSubtree = false;
         bool contentPseudoCrossing = false;
         bool invalidatesSlotted = false;
+        bool containsIdClassAttributeOrTypeInScope = false;
     };
 
     static bool extractInvalidationSetFeature(const CSSSelector&, InvalidationSetFeatures&);