VM: Always inline typed data list factories, clean up inliner.

runtime/vm/flow_graph_inliner.cc

Index: runtime/vm/flow_graph_inliner.cc
diff --git a/runtime/vm/flow_graph_inliner.cc b/runtime/vm/flow_graph_inliner.cc
index f8bcb22fdf9b928d01ed2540806560ca836bb72d..bcd5207582fca614219a79835c8ff7af1b94e5b4 100644
--- a/runtime/vm/flow_graph_inliner.cc
+++ b/runtime/vm/flow_graph_inliner.cc
@@ -618,9 +618,6 @@ class CallSiteInliner : public ValueObject {
                              function.ToCString(),
                              function.deoptimization_counter()));
 
-    // Make a handle for the unoptimized code so that it is not disconnected
-    // from the function while we are trying to inline it.
-    const Code& unoptimized_code = Code::Handle(function.unoptimized_code());
     // Abort if the inlinable bit on the function is low.
     if (!function.CanBeInlined()) {
       TRACE_INLINING(THR_Print("     Bailout: not inlinable\n"));
@@ -862,9 +859,6 @@ class CallSiteInliner : public ValueObject {
       FlowGraphInliner::SetInliningId(callee_graph,
           inliner_->NextInlineId(callee_graph->function(),
                                  call_data->caller_inlining_id_));
-      // We allocate a ZoneHandle for the unoptimized code so that it cannot be
-      // disconnected from its function during the rest of compilation.
-      Code::ZoneHandle(unoptimized_code.raw());
       TRACE_INLINING(THR_Print("     Success\n"));
       PRINT_INLINING_TREE(NULL,
           &call_data->caller, &function, call);