perf: pngcrush all pngs (#28479)

This is the result of running
```sh
find ./ -iname "*.png" -exec pngcrush -brute -ow --  {} \;
```

[Summary of size reductions](https://docs.google.com/spreadsheets/d/12Qgx7DfKabWw0PJza6ozC1kCHTofi6wyBLWGtwLW7G4/preview)

Last done in July, 2017 in #18243

PR Close #28479
This commit is contained in:
Jeremy Elbourn
2019-01-31 14:39:42 -08:00
committed by Matias Niemelä
parent 1b33142595
commit ec6e7303dd
65 changed files with 0 additions and 0 deletions

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