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

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 80a0ada87d1f4df48a0b60d0f7066780a9f33647..8e3aa737e3103ae0d4df2d71a9a0fb02e58b6bfb 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1306,8 +1306,8 @@ class Object {
       Handle<Object> value, LanguageMode language_mode);
 
   // Get the first non-hidden prototype.
-  static inline Handle<Object> GetPrototype(Isolate* isolate,
-                                            Handle<Object> receiver);
+  static inline MaybeHandle<Object> GetPrototype(Isolate* isolate,
+                                                 Handle<Object> receiver);
 
   bool HasInPrototypeChain(Isolate* isolate, Object* object);
 
@@ -9539,12 +9539,16 @@ class JSProxy: public JSReceiver {
  public:
   // [handler]: The handler property.
   DECL_ACCESSORS(handler, Object)
-
+  // [target]: The target property.
+  DECL_ACCESSORS(target, Object)
   // [hash]: The hash code property (undefined if not initialized yet).
   DECL_ACCESSORS(hash, Object)
 
   DECLARE_CAST(JSProxy)
 
+
+  static MaybeHandle<Object> GetPrototype(Handle<JSProxy> receiver);
+
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithHandler(
       Handle<JSProxy> proxy,
       Handle<Object> receiver,