Deprecate the unofficial -webkit-transition media feature

Source/core/css/MediaQueryEvaluator.cpp

Index: Source/core/css/MediaQueryEvaluator.cpp
diff --git a/Source/core/css/MediaQueryEvaluator.cpp b/Source/core/css/MediaQueryEvaluator.cpp
index d1aa3f74b23342f292cac7de4e29f9d4ac323a69..9ede9f409f81bcee72a70dfdd864f3e8af6bd1ec 100644
--- a/Source/core/css/MediaQueryEvaluator.cpp
+++ b/Source/core/css/MediaQueryEvaluator.cpp
@@ -554,8 +554,22 @@ static bool animationMediaFeatureEval(CSSValue* value, RenderStyle*, Frame*, Med
     return true;
 }
 
-static bool transitionMediaFeatureEval(CSSValue* value, RenderStyle*, Frame*, MediaFeaturePrefix op)
+static bool transitionMediaFeatureEval(CSSValue* value, RenderStyle*, Frame* frame, MediaFeaturePrefix op)
 {
+    UseCounter::count(frame->document(), UseCounter::PrefixedTransitionMediaFeature);

[Mike West, 2013/05/13 15:11:51]

This is unprefixed, right? You'll need to have two items in the enum. :)

+
+    if (value) {
+        float number;
+        return numberValue(value, number) && compareValue(1, static_cast<int>(number), op);
+    }
+    return true;
+}
+
+// Legacy prefixed version.
+static bool webkitTransitionMediaFeatureEval(CSSValue* value, RenderStyle*, Frame* frame, MediaFeaturePrefix op)
+{
+    UseCounter::countDeprecation(frame->document(), UseCounter::PrefixedTransitionMediaFeature);
+
     if (value) {
         float number;
         return numberValue(value, number) && compareValue(1, static_cast<int>(number), op);