Add fast path for querySelector(All)

PerformanceTests/Parser/query-selector-all-first.html

Index: PerformanceTests/Parser/query-selector-all-first.html
diff --git a/PerformanceTests/Parser/query-selector-first.html b/PerformanceTests/Parser/query-selector-all-first.html
similarity index 50%
copy from PerformanceTests/Parser/query-selector-first.html
copy to PerformanceTests/Parser/query-selector-all-first.html
index 896e0e0894c58cd1bb2f36c5dff0745fa6ab008c..34076b4e5bfaa29c9334bce607596701da20634a 100644
--- a/PerformanceTests/Parser/query-selector-first.html
+++ b/PerformanceTests/Parser/query-selector-all-first.html
@@ -5,12 +5,12 @@
 <script src="../resources/runner.js"></script>
 <script>
 PerfTestRunner.measureRunsPerSecond({
-    description: "This benchmark tests querySelector() for an element that appears near the head of the document",
+    description: "This benchmark tests querySelectorAll() for an element that appears near the head of the document",
     run: function() {
         for (var i = 0; i < 1000; i++) {
-            document.querySelector("h1");
-            document.querySelector("#id");
-            document.querySelector(".class");
+            document.querySelectorAll("h1");
+            document.querySelectorAll("#id");
+            document.querySelectorAll(".class");
         }
     }});
 </script>