Move CSS animations use counters to UseCounter

third_party/WebKit/Source/core/frame/UseCounter.h

Index: third_party/WebKit/Source/core/frame/UseCounter.h
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.h b/third_party/WebKit/Source/core/frame/UseCounter.h
index d00df541ccee139e183207df8d4acfa0457ee422..dca1bd0bb7ef70b89458f9e27d3d493b8e66f5ae 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -1505,6 +1505,9 @@ class CORE_EXPORT UseCounter {
   void count(CSSParserMode, CSSPropertyID);
   void count(Feature);
 
+  static void countAnimatedCSS(const Document&, CSSPropertyID);
+  void countAnimatedCSS(CSSPropertyID);
+
   // Count only features if they're being used in an iframe which does not
   // have script access into the top level document.
   static void countCrossOriginIframe(const Document&, Feature);
@@ -1517,6 +1520,11 @@ class CORE_EXPORT UseCounter {
   static bool isCounted(Document&, const String&);
   bool isCounted(CSSPropertyID unresolvedProperty);
 
+  // Return whether the CSSPropertyID was previously counted for this document.
+  // NOTE: only for use in testing.
+  static bool isCountedAnimatedCSS(Document&, const String&);
+  bool isCountedAnimatedCSS(CSSPropertyID unresolvedProperty);
+
   // Retains a reference to the observer to notify of UseCounter changes.
   void addObserver(Observer*);
 
@@ -1546,6 +1554,7 @@ class CORE_EXPORT UseCounter {
 
   EnumerationHistogram& featuresHistogram() const;
   EnumerationHistogram& cssHistogram() const;
+  EnumerationHistogram& animatedCSSHistogram() const;
 
   // If non-zero, ignore all 'count' calls completely.
   unsigned m_muteCount;
@@ -1560,6 +1569,7 @@ class CORE_EXPORT UseCounter {
   // histograms.
   BitVector m_featuresRecorded;
   BitVector m_CSSRecorded;
+  BitVector m_animatedCSSRecorded;
 
   HeapHashSet<Member<Observer>> m_observers;