Made Isolate a mandatory parameter for everything Handle-related.

src/elements.cc

Index: src/elements.cc
diff --git a/src/elements.cc b/src/elements.cc
index b9a008cf5be7956cbcd422617d03f90cf64a7494..e37ae58c45a3017138ab2f0adf538a9231803b82 100644
--- a/src/elements.cc
+++ b/src/elements.cc
@@ -1576,7 +1576,7 @@ class DictionaryElementsAccessor
         if (mode == JSObject::STRICT_DELETION) {
           // Deleting a non-configurable property in strict mode.
           HandleScope scope(isolate);
-          Handle<Object> holder(obj);
+          Handle<Object> holder(obj, isolate);
           Handle<Object> name = isolate->factory()->NewNumberFromUint(key);
           Handle<Object> args[2] = { name, holder };
           Handle<Object> error =