Apply custom property animation

third_party/WebKit/Source/core/css/resolver/StyleResolver.h

Index: third_party/WebKit/Source/core/css/resolver/StyleResolver.h
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleResolver.h b/third_party/WebKit/Source/core/css/resolver/StyleResolver.h
index 9416e8b425d69fbff01834fb05d5a4a34066d84e..bb317bc1703e9cf234a716dc8c7cc35fdc62e04b 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleResolver.h
+++ b/third_party/WebKit/Source/core/css/resolver/StyleResolver.h
@@ -210,10 +210,33 @@ class CORE_EXPORT StyleResolver final
   void collectTreeBoundaryCrossingRulesV0CascadeOrder(const Element&,
                                                       ElementRuleCollector&);
 
-  void applyMatchedProperties(StyleResolverState&, const MatchResult&);
-  bool applyAnimatedProperties(StyleResolverState&,
-                               const Element* animatingElement);
-  void applyCallbackSelectors(StyleResolverState&);
+  struct CacheSuccess {
+    STACK_ALLOCATED();
+    bool isInheritedCacheHit;
+    bool isNonInheritedCacheHit;
+    unsigned cacheHash;
+    Member<const CachedMatchedProperties> cachedMatchedProperties;
+
+    CacheSuccess(bool isInheritedCacheHit,
+                 bool isNonInheritedCacheHit,
+                 unsigned cacheHash,
+                 const CachedMatchedProperties* cachedMatchedProperties)
+        : isInheritedCacheHit(isInheritedCacheHit),
+          isNonInheritedCacheHit(isNonInheritedCacheHit),
+          cacheHash(cacheHash),
+          cachedMatchedProperties(cachedMatchedProperties) {}
+
+    bool isFullCacheHit() const {
+      return isInheritedCacheHit && isNonInheritedCacheHit;
+    }
+    bool shouldApplyInheritedOnly() const {
+      return isNonInheritedCacheHit && !isInheritedCacheHit;
+    }
+    void setFailed() {
+      isInheritedCacheHit = false;
+      isNonInheritedCacheHit = false;
+    }
+  };
 
   // These flags indicate whether an apply pass for a given CSSPropertyPriority
   // and isImportant is required.
@@ -239,6 +262,30 @@ class CORE_EXPORT StyleResolver final
     UpdateNeedsApplyPass = true,
   };
 
+  void applyMatchedPropertiesAndCustomPropertyAnimations(
+      StyleResolverState&,
+      const MatchResult&,
+      const Element* animatingElement);
+  CacheSuccess applyMatchedCache(StyleResolverState&, const MatchResult&);
+  void applyCustomProperties(StyleResolverState&,
+                             const MatchResult&,
+                             bool applyAnimations,
+                             const CacheSuccess&,
+                             NeedsApplyPass&);
+  void applyMatchedAnimationProperties(StyleResolverState&,
+                                       const MatchResult&,
+                                       const CacheSuccess&,
+                                       NeedsApplyPass&);
+  void applyMatchedStandardProperties(StyleResolverState&,
+                                      const MatchResult&,
+                                      const CacheSuccess&,
+                                      NeedsApplyPass&);
+  void calculateAnimationUpdate(StyleResolverState&,
+                                const Element* animatingElement);
+  bool applyAnimatedStandardProperties(StyleResolverState&, const Element*);
+
+  void applyCallbackSelectors(StyleResolverState&);
+
   template <CSSPropertyPriority priority, ShouldUpdateNeedsApplyPass>
   void applyMatchedProperties(StyleResolverState&,
                               const MatchedPropertiesRange&,