Allow FreeType compilation and linkage from third_party on Windows

Create an OWNERS file for this directory and add myself as well. This is
preparation for using a shared FreeType between Blink and PDFium, but
not actually used as a depedency to any Windows targets yet.

BUG=700926

Review-Url: https://codereview.chromium.org/2781773003
Cr-Commit-Position: refs/heads/master@{#460211}
2 files changed