tiff: version bump to 4.0.7

BUG=chromium:689931
TEST=precq passes

Change-Id: Ia227380eea0ca16ec23aee9c195f4519949607b9
Reviewed-on: https://chromium-review.googlesource.com/455156
(cherry picked from commit 279cce86370f3172495df330d796b69ba0504194)
Reviewed-on: https://chromium-review.googlesource.com/456680
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
3 files changed