Use high-precision coordinates for filtered scaling.

Use high-precision coordinates for filtered scaling.

[hshi, 2013-02-07 20:19:23]

Could you please take a look? I have locally verified that this fixes the
wallpaper down-scaling problem on daisy (from 2732x1536 to 1366x768, or exactly
2:1).

Besides this one function I suspect that we need to study other functions too.

[reed1, 2013-02-07 20:31:13]

lgtm from observation and style.

Derek, can we locally apply this and test it against known results anywhere?
(where neon is active)

[hshi, 2013-02-07 22:47:00]

Hi just to confirm, do I have any more action item on this issue, or would you
be taking over? I'm not a committer and I assume you'll land this CL on my
behalf (or make changes as you deem appropriate)... Thanks.

[reed1, 2013-02-08 15:03:06]

I will take over this CL.

[reed1, 2013-02-11 19:56:49]

landed in 7694