[interpreter] Make --trace-codegen also trace bytecode.

This ensures that both --trace-codegen as well as --print-ast work for
Ignition and print traces for generated bytecode as well. Here we do
consider "bytecode" to be "code" as well for tracing purposes.

R=rmcilroy@chromium.org

Review-Url: https://codereview.chromium.org/2443003003
Cr-Commit-Position: refs/heads/master@{#40531}

src/interpreter/interpreter.cc

@@ -197,6 +197,8 @@ InterpreterCompilationJob::Status InterpreterCompilationJob::FinalizeJobImpl() {
     return FAILED;
   }
 
+  CodeGenerator::MakeCodePrologue(info(), "interpreter");
+
   if (FLAG_print_bytecode) {
     OFStream os(stdout);
     bytecodes->Print(os);