Trace-opt/trace-deopt output is ambiguous if multiple functions share
the same name. This change adds file names to this output behind the
--trace-file-names flag to reduce this ambiguity.

R=ofrobots@google.com
BUG=

Review URL: https://codereview.chromium.org/1920873003

Cr-Commit-Position: refs/heads/master@{#35824}