Remove calls to non-handlified version of GetProperty(name).

src/isolate.cc

 // Copyright 2012 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 1028 matching lines @@
   } else {
     // Report the exception if it isn't caught by JavaScript code.
     return handler == NULL;
   }
 }
 
 
 bool Isolate::IsErrorObject(Handle<Object> obj) {
   if (!obj->IsJSObject()) return false;
 
-  String* error_key =
-      *(factory()->InternalizeOneByteString(STATIC_ASCII_VECTOR("$Error")));
-  Object* error_constructor =
-      js_builtins_object()->GetPropertyNoExceptionThrown(error_key);
+  Handle<String> error_key =
+      factory()->InternalizeOneByteString(STATIC_ASCII_VECTOR("$Error"));
+  Handle<Object> error_constructor = GlobalObject::GetPropertyNoExceptionThrown(
+      js_builtins_object(), error_key);
 
+  DisallowHeapAllocation no_gc;
   for (Object* prototype = *obj; !prototype->IsNull();
        prototype = prototype->GetPrototype(this)) {
     if (!prototype->IsJSObject()) return false;
-    if (JSObject::cast(prototype)->map()->constructor() == error_constructor) {
+    if (JSObject::cast(prototype)->map()->constructor() ==
+        *error_constructor) {
       return true;
     }
   }
   return false;
 }
 
 static int fatal_exception_depth = 0;
 
 void Isolate::DoThrow(Object* exception, MessageLocation* location) {
   ASSERT(!has_pending_exception());
@@ skipping 1216 matching lines @@
       Handle<JSObject> obj = factory()->NewJSObjectFromMap(map);
       JSObject::NormalizeProperties(obj, KEEP_INOBJECT_PROPERTIES, 8);
       JSObject::SetProperty(registry, name, obj, NONE, STRICT).Assert();
     }
   }
   return Handle<JSObject>::cast(factory()->symbol_registry());
 }
 
 
 } }  // namespace v8::internal