Modify PostUploadHooks to remove dependency on cl objects.

In order to enable Python 3 migration, presubmit needs
to stop depending on git-cl internal objects.

Depends on [1] and [2].

[1] https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2007670
[2] https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2007262

Bug: 1042324
Change-Id: I84f48cf7915dc1d95979bd99e839c0bec4348d6d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/265209
Auto-Submit: Edward Lemur <ehmaldonado@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
1 file changed