Revert "Delete unreachable "update gms" in PasswordManagerErrorMessageDelegate"

This reverts commit 14f71c8c59c1085573ebebc56fef8a5caefb229e.

Reason for revert: PasswordGenerationFrameHelperTest failures on
"android-automotive-12l-x64-rel-tests" (https://crbug.com/440019138)

Bug: 433684502
Original change's description:
> Delete unreachable "update gms" in PasswordManagerErrorMessageDelegate
>
> This is a follow-up to crrev.com/c/6832195.
> PasswordManagerClient::ShowPasswordManagerErrorMessage() does nothing
> for kGMSCoreOutdatedSavingPossible and kGMSCoreOutdatedSavingDisabled
> these days. The enum values can be deleted, along with the corresponding
> UI code.
> https://source.chromium.org/chromium/chromium/src/+/main:chrome/browser/password_manager/chrome_password_manager_client.cc;l=523;drc=c711efae5816b0a02668f4aca7f9bd94ad3860bb
>
> Semi-related, this CL also replaces
> PasswordFeatureManager::ShouldUpdateGmsCore() with a direct call
> to IsGmsCoreUpdateRequired(), since the latter is equally easy to
> unit test.
>
> OBSOLETE_HISTOGRAMS=The "update gms" password manager message was deleted.
>
> Bug: 433684502
> Change-Id: Ic9d8addef1db64adbd6de06a724a9c9b4229f270
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6862993
> Auto-Submit: Victor Vianna <victorvianna@google.com>
> Reviewed-by: Friedrich Hauser <friedrichh@chromium.org>
> Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
> Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1503877}

Bug: 433684502, 440019138
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Ife78f05c0c33cc7977036dd5806c23e6dbbe5226
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6863279
Auto-Submit: Alex Ilin <alexilin@chromium.org>
Commit-Queue: Alex Ilin <alexilin@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Alex Ilin <alexilin@google.com>
Cr-Commit-Position: refs/heads/main@{#1503983}