Import Android SDK Platform-Tools 28 [4335822]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4335822 \
    --target sdk_phone_armv7-sdk_mac \
    sdk-repo-darwin-platform-tools-4335822.zip

Pkg.Revision has been modified to appear as 28.0.0

Change-Id: I0202e143f28589b475d9b87a0570698f3c0a027f