This CL defines a trie-based datastructure for representing files based
on their path. It directly mirrors the structure of a file system,
keeping track of directories and the files inside them. It also stores
some information about OWNERS files, for use during clustering (we
won't cluster files together if there's a "break" in ownership due to
`set noparent). Optionally, the ownership information can be overridden;
this will be done via a command-line flag when the algorithm is fully
implemented.
Bug: 335797528
Change-Id: I5dcdf36695a1da5714ec021e5e18b6c36855a4f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6321290
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>
Commit-Queue: Devon Loehr <dloehr@google.com>
