Make explicit constant for num of CSSPropertyIDs

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

 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1081 matching lines @@
 
   ASSERT_NOT_REACHED();
   return 0;
 }
 
 UseCounter::UseCounter(Context context)
     : m_muteCount(0),
       m_disableReporting(false),
       m_context(context),
       m_featuresRecorded(NumberOfFeatures),
-      m_CSSRecorded(lastUnresolvedCSSProperty + 1) {}
+      m_CSSRecorded(numCSSPropertyIDs) {}
 
 void UseCounter::muteForInspector() {
   m_muteCount++;
 }
 
 void UseCounter::unmuteForInspector() {
   m_muteCount--;
 }
 
 void UseCounter::recordMeasurement(Feature feature) {
@@ skipping 192 matching lines @@
  */
 
 static EnumerationHistogram& featureObserverHistogram() {
   DEFINE_STATIC_LOCAL(
       EnumerationHistogram, histogram,
       ("WebCore.FeatureObserver", UseCounter::NumberOfFeatures));
   return histogram;
 }
 
 UseCounter::LegacyCounter::LegacyCounter()
-    : m_featureBits(NumberOfFeatures),
-      m_CSSBits(lastUnresolvedCSSProperty + 1) {}
+    : m_featureBits(NumberOfFeatures), m_CSSBits(numCSSPropertyIDs) {}
 
 UseCounter::LegacyCounter::~LegacyCounter() {
   // PageDestruction was intended to be used as a scale, but it's broken (due to
   // fast shutdown).  See https://crbug.com/597963.
   featureObserverHistogram().count(OBSOLETE_PageDestruction);
   updateMeasurements();
 }
 
 void UseCounter::LegacyCounter::countFeature(Feature feature) {
   m_featureBits.quickSet(feature);
@@ skipping 13 matching lines @@
   // Clearing count bits is timing sensitive.
   m_featureBits.clearAll();
 
   // FIXME: Sometimes this function is called more than once per page. The
   // following bool guards against incrementing the page count when there are no
   // CSS bits set. https://crbug.com/236262.
   DEFINE_STATIC_LOCAL(
       EnumerationHistogram, cssPropertiesHistogram,
       ("WebCore.FeatureObserver.CSSProperties", kMaximumCSSSampleId));
   bool needsPagesMeasuredUpdate = false;
-  for (size_t i = firstCSSProperty; i <= lastUnresolvedCSSProperty; ++i) {
+  for (size_t i = firstCSSProperty; i < numCSSPropertyIDs; ++i) {
     if (m_CSSBits.quickGet(i)) {
       int cssSampleId = mapCSSPropertyIdToCSSSampleIdForHistogram(
           static_cast<CSSPropertyID>(i));
       cssPropertiesHistogram.count(cssSampleId);
       needsPagesMeasuredUpdate = true;
     }
   }
 
   if (needsPagesMeasuredUpdate)
     cssPropertiesHistogram.count(totalPagesMeasuredCSSSampleId());
 
   m_CSSBits.clearAll();
 }
 
 }  // namespace blink