Add Dark and Tintable Icons

Additionally, update `build/toolchain/ios/compile_xcassets.py` to
allow unused icons which is necessary to support dark mode and
tinted App Icons while building with Xcode 15

Bug: 348013337
Change-Id: If57c974db722172161da7c28641a090c1d6858c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5640416
Auto-Submit: Mike Dougherty <michaeldo@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1326377}
NOKEYCHECK=True
GitOrigin-RevId: 03c906c35700a982d2755b461c7289db6a27fe11
1 file changed