message: Add scoped timer to log jit compile times.
  RELNOTES: n/a
diff: @@ -433,6 +433,10 @@ Status InitializeModuleHooks(
  StatusOr<std::unique_ptr<Executable>> CpuCompiler::Compile(
  std::unique_ptr<HloModule> module, se::StreamExecutor* stream_exec) {
  + const string timer_message =
  + "Compiling [" + module->name() + "] for CPU using JIT";
  + ScopedLoggingTimer compiling_timer(timer_message, 1);
  +
  VLOG(1) << "Compiling: " << module->name();
  TF_RET_CHECK(stream_exec != nullptr);
  std::call_once(llvm_command_line_options_initialized,
  