Exclude exe files while unzipping CRXes

BUG=468355

Review-Url: https://codereview.chromium.org/2321823002
Cr-Original-Commit-Position: refs/heads/master@{#417494}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b040d3a050ac90bdae599ced55b2f8f7ac84bc30
2 files changed