This looks like out of scope for TE, hence adding the respective label for it to  triage further.

Not in TE's scope.

pkasting@ can you help triage this? It appears you had added the original code that is now dead.

This is unreferenced, and longstanding, so should be safe to remove.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/62ef852f1de25d4ba2d877342791fb860479effd

commit 62ef852f1de25d4ba2d877342791fb860479effd
Author: ratsunny <ratsunny@gmail.com>
Date: Sun Dec 04 05:45:23 2016

Remove obsolete keywords table migrating function

Since the function KeywordTable::MigrateKeywordsTableForVersion45
is not used in codebase, it's safe to remove it.

R=pkasting@chromium.org
BUG= 665018 

Review-Url: https://codereview.chromium.org/2542933002
Cr-Commit-Position: refs/heads/master@{#436188}

[modify] https://crrev.com/62ef852f1de25d4ba2d877342791fb860479effd/components/search_engines/keyword_table.cc
[modify] https://crrev.com/62ef852f1de25d4ba2d877342791fb860479effd/components/search_engines/keyword_table.h