Push: Don't try to upload missing file.
Push: Don't try to upload missing file.

BUG=skia:

Change-Id: I3c6e0ee4aaa2149e24e259442bd61f836d2c2867
Reviewed-on: https://skia-review.googlesource.com/9816
Reviewed-by: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>
Commit-Queue: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot