tree b729ac4b1c8b8e7730c71ee27f14ce4125161378
parent ba0585d60fb9cfd6f5088abb10a637ef34bcee9e
author Sam Clegg <sbc@chromium.org> 1780036522 -0700
committer Sam Clegg <sbc@chromium.org> 1780343509 -0700

Replace optional Tools fields (using `hasattr`) with normal class fields.

Also remove `version_filter` completely.  The last usage of this
field was removed in #1165.