bin/sync: call fetch-gn when DEPS changes

Change-Id: Ifb2a364df1a8817152a2c1e79748d14534a9e523
Reviewed-on: https://skia-review.googlesource.com/3904
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed