Add micro-benchmark for Proxy has property

Bug: v8:6664, v8:6557
Change-Id: Ib0f9b258d49f96bee041cbcfc589f3ec91e013ed
Reviewed-on: https://chromium-review.googlesource.com/597859
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Maya Lekova <mslekova@google.com>
Cr-Commit-Position: refs/heads/master@{#47110}

test/js-perf-test/JSTests.json

@@ -24,7 +24,9 @@
         {"name": "ConstructProxyWithoutTrap"},
         {"name": "ConstructProxyWithTrap"},
         {"name": "GetPropertyOfProxyWithoutTrap"},
-        {"name": "GetPropertyOfProxyWithTrap"}
+        {"name": "GetPropertyOfProxyWithTrap"},
+        {"name": "HasOnProxyWithoutTrap"},
+        {"name": "HasOnProxyWithTrap"}
       ]
     },
     {

test/js-perf-test/Proxies/proxies.js

@@ -192,3 +192,40 @@ newBenchmark("GetPropertyOfProxyWithTrap", {
     return value === SOME_OTHER_NUMBER;
   }
 });
+
+// ----------------------------------------------------------------------------
+
+obj = {};
+
+newBenchmark("HasOnProxyWithoutTrap", {
+  setup() {
+    p = new Proxy(obj, {});
+  },
+  run() {
+    for(var i = 0; i < ITERATIONS; i++) {
+      value = ('prop' in p);
+    }
+  },
+  teardown() {
+    return value === true;
+  }
+});
+// ----------------------------------------------------------------------------
+
+newBenchmark("HasOnProxyWithTrap", {
+  setup() {
+    p = new Proxy(obj, {
+      has: function(target, propertyKey) {
+        return true;
+      }
+    });
+  },
+  run() {
+    for(var i = 0; i < ITERATIONS; i++) {
+      value = ('prop' in p);
+    }
+  },
+  teardown() {
+    return value === true;
+  }
+});