These classes were hoisted and renamed. This has been replaced in
Chromium as well. This is a mechanical change for Brave, done with the
following script.
```
git grep -lw 'Value::List' | xargs sed -i 's/\bValue::List\b/ListValue/g'
git grep -lw 'Value::Dict' | xargs sed -i 's/\bValue::Dict\b/DictValue/g'
git cl format
```
Chromium changes:
https://chromium.googlesource.com/chromium/src/+/6bc468d481835992696083e99e556516fb7f5f80
```
commit 6bc468d481835992696083e99e556516fb7f5f80
Author: Avi Drissman <avi@chromium.org>
Date: Thu Jan 29 22:14:50 2026 -0800
Remove aliases for base::DictValue and base::ListValue
This removes a few last stragglers as well.
Fixed: 478100525
Cq-Include-Trybots: luci.chromium.try:win-official,mac-official,linux-official,android-official,android-desktop-x64-official
Change-Id: If92142b8ab0562a82c609b71c6b2a7665cea6ec6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7513889
Auto-Submit: Avi Drissman <avi@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Owners-Override: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1577038}
```
Issue: https://github.com/brave/brave-browser/issues/52435
This moves the `MojoBaseValue` type to the `//brave/base` directory to be used as a more general purpose `base::Value` bridge wrapper. It also updates the `//brave/base/mac` directory to `apple` and fixes a few banned method calls.
cdesouza-chromium