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

src/runtime/runtime-debug.cc

Index: src/runtime/runtime-debug.cc
diff --git a/src/runtime/runtime-debug.cc b/src/runtime/runtime-debug.cc
index 27216fb323cdef04e6492f753bdc4d68c2ce2ad7..83a7dc5839849f3ce6ec41d936455d09c140dc27 100644
--- a/src/runtime/runtime-debug.cc
+++ b/src/runtime/runtime-debug.cc
@@ -1449,7 +1449,10 @@ RUNTIME_FUNCTION(Runtime_DebugGetPrototype) {
   HandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0);
-  return *Object::GetPrototype(isolate, obj);
+  Handle<Object> prototype;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, prototype,

[Jakob Kummerow, 2015/11/12 12:04:24]

Yeah, I think this is going to cause trouble, because callers aren't prepared to
handle exceptions. Maybe add a TODO(1543) saying that we need to come up with a
solution?

[Camillo Bruni, 2015/11/12 20:20:55]

added.

+                                     Object::GetPrototype(isolate, obj));
+  return *prototype;
 }