Implement get trap for proxies.

src/execution.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 127 matching lines @@
     }
     return Handle<Object>();
   } else {
     isolate->clear_pending_message();
   }
 
   return Handle<Object>(value->ToObjectUnchecked(), isolate);
 }
 
 
-Handle<Object> Execution::Call(Handle<JSFunction> func,
+Handle<Object> Execution::Call(Handle<Object> callable,
                                Handle<Object> receiver,
                                int argc,
                                Object*** args,
                                bool* pending_exception) {
+  if (!callable->IsJSFunction()) {
+    callable = TryGetFunctionDelegate(callable, pending_exception);
+    if (*pending_exception) return callable;
+  }
+  Handle<JSFunction> func = Handle<JSFunction>::cast(callable);
   return Invoke(false, func, receiver, argc, args, pending_exception);
 }
 
 
 Handle<Object> Execution::New(Handle<JSFunction> func, int argc,
                               Object*** args, bool* pending_exception) {
   return Invoke(true, func, Isolate::Current()->global(), argc, args,
                 pending_exception);
 }
 
@@ skipping 672 matching lines @@
     return isolate->TerminateExecution();
   }
   if (stack_guard->IsInterrupted()) {
     stack_guard->Continue(INTERRUPT);
     return isolate->StackOverflow();
   }
   return isolate->heap()->undefined_value();
 }
 
 } }  // namespace v8::internal