Remove the CSS_COMPOSITING define, leaving the implementation under the runtime flag, since runtime…

LayoutTests/css3/compositing/script-tests/blend-mode-property-parsing.js

 description("Test the parsing of the mix-blend-mode property.");
 
 function jsWrapperClass(node)
 {
     if (!node)
         return "[null]";
     var string = Object.prototype.toString.apply(node);
     return string.substr(8, string.length - 9);
 }
 
 function shouldBeType(expression, className, prototypeName, constructorName)
 {
     if (!prototypeName)
-        prototypeName = className + "Prototype";
+        prototypeName = "Object";
     if (!constructorName)
-        constructorName = className + "Constructor";
+        constructorName = "Function";
     shouldBe("jsWrapperClass(" + expression + ")", "'" + className + "'");
     shouldBe("jsWrapperClass(" + expression + ".__proto__)", "'" + prototypeName + "'");
     shouldBe("jsWrapperClass(" + expression + ".constructor)", "'" + constructorName + "'");
 }
 
 // These have to be global for the test helpers to see them.
 var stylesheet, cssRule, declaration, blendModeRule, subRule;
 var styleElement = document.createElement("style");
 document.head.appendChild(styleElement);
 stylesheet = styleElement.sheet;
@@ skipping 16 matching lines @@
     shouldBeType("blendModeRule", "CSSPrimitiveValue");
 }
 
 var blendmodes = ["normal", "multiply", "screen", "overlay", "darken", "lighten", "color-dodge", "color-burn", "hard-light", "soft-light", "difference", "exclusion", "hue", "saturation", "color", "luminosity"];
 
 for(x in blendmodes)
    testBlendModeRule("Basic reference", blendmodes[x], 1, blendmodes[x]);
 
 
 successfullyParsed = true;