increase test TF dump by a digit

I just ran into a situation where platforms disagreed on rounding to the
precision we've got now.  Adding a digit should fix that.

I think we're pretty confident that we're getting the exact same bitwise
floats for these now, so we should always be able to use this trick when
we run into display rounding trouble.

Change-Id: I7d7ec8bf9871368152349ef707e8ad823f664656
Reviewed-on: https://skia-review.googlesource.com/124920
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@chromium.org>
Reviewed-by: Brian Osman <brianosman@google.com>
43 files changed