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

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 87cd2c50cfa9eb01258307c85391a81e1a4dc4c7..4ba0563bc87fc7a7b75923f9e789a738eea79cc9 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1212,7 +1212,6 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
                     isolate->initial_object_prototype(), Builtins::kIllegal);
   }
 
-
   {  // -- R e g E x p
     // Builtin functions for RegExp.prototype.
     Handle<JSFunction> regexp_fun =
@@ -2038,7 +2037,6 @@ void Bootstrapper::ExportExperimentalFromRuntime(Isolate* isolate,
 
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_modules)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_array_includes)
-EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_proxies)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy_function)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy_let)
@@ -2187,6 +2185,16 @@ void Genesis::InitializeGlobal_harmony_simd() {
 }
 
 
+void Genesis::InitializeGlobal_harmony_proxies() {
+  if (!FLAG_harmony_proxies) return;
+  Handle<JSGlobalObject> global(
+      JSGlobalObject::cast(native_context()->global_object()));
+  Isolate* isolate = global->GetIsolate();
+  InstallFunction(global, "Proxy", JS_PROXY_TYPE, JSProxy::kSize,
+                  isolate->initial_object_prototype(), Builtins::kIllegal);
+}
+
+
 Handle<JSFunction> Genesis::InstallInternalArray(Handle<JSObject> target,
                                                  const char* name,
                                                  ElementsKind elements_kind) {