A first skeleton for introducing Harmony proxies

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index a0ce6050e529b8d4005f2da6236ad83adc83b9b4..ba78253ea064f7b0746ca1046c9721c4ee9629b0 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -155,6 +155,9 @@ void HeapObject::HeapObjectVerify() {
       break;
     case FILLER_TYPE:
       break;
+    case JS_PROXY_TYPE:
+      JSProxy::cast(this)->JSProxyVerify();
+      break;
     case PROXY_TYPE:
       Proxy::cast(this)->ProxyVerify();
       break;
@@ -461,6 +464,11 @@ void JSRegExp::JSRegExpVerify() {
 }
 
 
+void JSProxy::JSProxyVerify() {
+  ASSERT(IsJSProxy());
+  VerifyPointer(handler());
+}
+
 void Proxy::ProxyVerify() {
   ASSERT(IsProxy());
 }