Revert of 🍵 Refactor the various locale_paks() templates to be more shared (patchset #2 id:260001 of https://codereview.chromium.org/2339783002/ )

Reason for revert:
The refactoring of the ios file is likely incorrect as it breaks the autoroller (as some files are no longer generated or have different name).

Reverting as half of the touched files are in ios/.

Original issue's description:
> Reland of Refactor the various locale_paks() templates to be more shared
>
> Reverted by:
> https://codereview.chromium.org/2340673002/
>
> Reason for reland:
> Now gn gens for enable_resource_whitelist_generation = true
>
> Main motivation for this is to more easily add per-target
> repack_whitelist.
>
> TBR=michaelbai@chromium.org,thakis@chromium.org,sdefresne@chromium.org,estevenson@chromium.org,rsesek@chromium.org,brettw@chromium.org
> BUG=645716
>
> Committed: https://crrev.com/d83512c644c7c61331a32c97ba549fcb1d8793cb
> Cr-Commit-Position: refs/heads/master@{#418450}

TBR=michaelbai@chromium.org,thakis@chromium.org,estevenson@chromium.org,rsesek@chromium.org,brettw@chromium.org,agrieve@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=645716

Review-Url: https://codereview.chromium.org/2338213002
Cr-Commit-Position: refs/heads/master@{#418511}
12 files changed