In my previous CL, I completely disabled the processing of inlining stacks
when generating code comments. This CL restores the feature at least for
runs without concurrent recompilation.

In other words, if you use --code-comments and want to see nice source positions,
you must also use --no-concurrent-recompilation.

Bug: v8:6048
Change-Id: Ief7e52a4046cb74e02b1783dbace19534093c588
Reviewed-on: https://chromium-review.googlesource.com/570021
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46643}