Reland "[ntp-footer] Add styles for New Tab Footer"

This reverts commit 121a0825e1d776d145ba77a5c99b49e53c11247f.

Reason for revert: This should be fine on the failing bot after https://chromium-review.googlesource.com/c/chromium/src/+/6496708

Bug: 394906769
Original change's description:
> Revert "[ntp-footer] Add styles for New Tab Footer"
>
> This reverts commit e2f48c7cab35a19a57b515d7098af2624cfb6f03.
>
> Reason for revert:
> LUCI Bisection has identified this change as the cause of a test failure. See the analysis: https://ci.chromium.org/ui/p/chromium/bisection/test-analysis/b/4722183017332736
>
> Sample build with failed test: https://ci.chromium.org/b/8716318360165805841
> Affected test(s):
> [ninja://chrome/test:browser_tests/NewTabFooterBrowserTest.App](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Ftest:browser_tests%2FNewTabFooterBrowserTest.App?q=VHash%3A35458c0f9bf50dc7)
> [ninja://chrome/test:interactive_ui_tests/CustomizeChromeInteractiveTest.EditThemeEnabledForExtensionNtp](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Ftest:interactive_ui_tests%2FCustomizeChromeInteractiveTest.EditThemeEnabledForExtensionNtp?q=VHash%3Acb86739c8212539b)
>
> If this is a false positive, please report it at http://b.corp.google.com/createIssue?component=1199205&description=Analysis%3A+https%3A%2F%2Fci.chromium.org%2Fui%2Fp%2Fchromium%2Fbisection%2Ftest-analysis%2Fb%2F4722183017332736&format=PLAIN&priority=P3&title=Wrongly+blamed+https%3A%2F%2Fchromium-review.googlesource.com%2Fc%2Fchromium%2Fsrc%2F%2B%2F6489709&type=BUG
>
> Original change's description:
> > [ntp-footer] Add styles for New Tab Footer
> >
> > Adds some styling for spacing, divider, and color to the New Tab Footer
> >
> > Screenshot in bug ticket.
> >
> > NO_IFTTT=Adding GM2 colors has its own bug ticket.
> >
> > Want-Code-Review: all
> > Bug: 394906769
> > Change-Id: I896d41612eef3df0e2fcb51ad84aea6ad289f5d2
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6489709
> > Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
> > Reviewed-by: Paul Adedeji <pauladedeji@google.com>
> > Commit-Queue: Riley Tatum <rtatum@google.com>
> > Cr-Commit-Position: refs/heads/main@{#1452810}
> >
>
> Bug: 394906769
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Change-Id: Ie79ae2975a81d84310f8adc7d413d911cd63c6e3
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6496516
> Owners-Override: Nate Chapin <japhet@chromium.org>
> Reviewed-by: Nate Chapin <japhet@chromium.org>
> Commit-Queue: Nate Chapin <japhet@chromium.org>
> Reviewed-by: Riley Tatum <rtatum@google.com>
> Cr-Commit-Position: refs/heads/main@{#1452955}

Bug: 394906769
Change-Id: Ie55813694d98838a230f876ea4840ab591ca653c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6497353
Reviewed-by: Paul Adedeji <pauladedeji@google.com>
Commit-Queue: Riley Tatum <rtatum@google.com>
Cr-Commit-Position: refs/heads/main@{#1455994}