Revert "Clean up legacy non-ThemeRefactorAndroid code now that the feature has"

This reverts commit 5448b1a708efb406e9f3e50ba199c2e1d6f2ea6b.

Reason for revert: crbug.com/1272561

Original change's description:
> Clean up legacy non-ThemeRefactorAndroid code now that the feature has
> launched.
>
> Bug: 1251194
> Change-Id: I2756b8f84a9af5c8fc2d032207a75833c195760f
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3283625
> Reviewed-by: Theresa  <twellington@chromium.org>
> Reviewed-by: Wenyu Fu <wenyufu@chromium.org>
> Reviewed-by: Yue Zhang <yuezhanggg@chromium.org>
> Commit-Queue: Sky Malice <skym@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#943694}

Bug: 1251194
Change-Id: Ia4bf37675e0b68dd21eb3371f620a3ca6398ad7f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3295396
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Egor Pasko <pasko@chromium.org>
Commit-Queue: Sky Malice <skym@chromium.org>
Auto-Submit: Egor Pasko <pasko@chromium.org>
Reviewed-by: Sky Malice <skym@chromium.org>
Cr-Commit-Position: refs/heads/main@{#944239}