Make a function to query whether a CSSPropertyID is valid and whether it has a name.

third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp

Index: third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp
diff --git a/third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp b/third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp
index c74e996998ea0b05804b619a2d4aec4e697d6d2a..4ae2362cb1f52ee76556a2802dc88e5fd1c59a47 100644
--- a/third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp
+++ b/third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp
@@ -115,7 +115,7 @@ static StringKeyframeEffectModel* createKeyframeEffectModel(StyleResolver* resol
 
     DEFINE_STATIC_LOCAL(SparseHistogram, propertyHistogram, ("WebCore.Animation.CSSProperties"));
     for (CSSPropertyID property : specifiedPropertiesForUseCounter) {
-        DCHECK_NE(property, CSSPropertyInvalid);
+        DCHECK(isValidCSSPropertyID(property));
         propertyHistogram.sample(UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(property));
     }
 
@@ -520,7 +520,7 @@ void CSSAnimations::maybeApplyPendingUpdate(Element* element)
         animation->update(TimingUpdateOnDemand);
         runningTransition.animation = animation;
         m_transitions.set(id, runningTransition);
-        DCHECK_NE(id, CSSPropertyInvalid);
+        DCHECK(isValidCSSPropertyID(id));
 
         DEFINE_STATIC_LOCAL(SparseHistogram, propertyHistogram, ("WebCore.Animation.CSSProperties"));
         propertyHistogram.sample(UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(id));
@@ -652,7 +652,7 @@ void CSSAnimations::calculateTransitionUpdate(CSSAnimationUpdate& update, const
             // If not a shorthand we only execute one iteration of this loop, and refer to the property directly.
             for (unsigned j = 0; !j || j < propertyList.length(); ++j) {
                 CSSPropertyID id = propertyList.length() ? propertyList.properties()[j] : property;
-                DCHECK_GE(id, firstCSSProperty);
+                DCHECK(isPropertyIDWithName(id));
 
                 if (!animateAll) {
                     if (CSSPropertyMetadata::isInterpolableProperty(id))