Fix lazy deoptimization at HInvokeFunction and enable target-recording call-function stub.

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
===================================================================
--- src/ia32/full-codegen-ia32.cc	(revision 9915)
+++ src/ia32/full-codegen-ia32.cc	(working copy)
@@ -2098,9 +2098,7 @@
   SetSourcePosition(expr->position());
 
   // Record call targets in unoptimized code, but not in the snapshot.
-  // TODO(1789): Reenable temporarily disabled recording CallFunctionStub
-  // when the issue is fixed.
-  bool record_call_target = false && !Serializer::enabled();
+  bool record_call_target = !Serializer::enabled();
   if (record_call_target) {
     flags = static_cast<CallFunctionFlags>(flags | RECORD_CALL_TARGET);
   }