[runtime] support new Proxy() instead of Proxy.create and install getPrototypeOf trap

test/mjsunit/harmony/proxies-hash.js

Index: test/mjsunit/harmony/proxies-hash.js
diff --git a/test/mjsunit/harmony/proxies-hash.js b/test/mjsunit/harmony/proxies-hash.js
index 65d2d3c5646cdbb2188a439407f30ee536795a87..bf3ddffd9f626eae245784d66f4a5bdaa45603d8 100644
--- a/test/mjsunit/harmony/proxies-hash.js
+++ b/test/mjsunit/harmony/proxies-hash.js
@@ -31,7 +31,7 @@
 // Helper.
 
 function TestWithProxies(test, construct, handler) {
-  test(construct, handler, Proxy.create)
+  test(construct, handler, function(h) { return new Proxy({}, h) })
   test(construct, handler, function(h) {
     return Proxy.createFunction(h, function() {})
   })