[Isolates] Move contents of Top into Isolate....

src/stub-cache.cc

Index: src/stub-cache.cc
===================================================================
--- src/stub-cache.cc	(revision 4906)
+++ src/stub-cache.cc	(working copy)
@@ -905,7 +905,7 @@
   Handle<Object> error =
       Factory::NewReferenceError("not_defined",
                                   HandleVector(&name_handle, 1));
-  return Top::Throw(*error);
+  return Isolate::Current()->Throw(*error);
 }