DirectWrite to detect GDI only fonts.

DirectWrite to detect GDI only fonts.

The exist a number of webfonts which have poor hinting which look very
bad with any vertical subsampling. The fonts often rely on drop out
control to avoid zero coverage in the y direction. As a result, any font
with hints but no 'gasp' table is considered to be poorly hinted in this
way, and will not be rendered with vertical subsampling when hinted.

Committed: https://skia.googlesource.com/skia/+/761b2509d59787a8920b2e98911cff9f88e0eb4e

[bungeman-skia, 2014-06-30 17:49:02]

This should 'fix' some poorly hinted webfonts, by making them look about as
poorly hinted as they were with GDI.

[mtklein, 2014-06-30 18:32:06]

lgtm

[bungeman-skia, 2014-06-30 19:04:41]

The CQ bit was checked by bungeman@google.com

[commit-bot: I haz the power, 2014-06-30 19:05:47]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/bungeman@google.com/363433002/1

[commit-bot: I haz the power, 2014-06-30 19:19:44]

Change committed as 761b2509d59787a8920b2e98911cff9f88e0eb4e

[eae, 2014-06-30 19:37:11]

On 2014/06/30 19:19:44, I haz the power (commit-bot) wrote:
> Change committed as 761b2509d59787a8920b2e98911cff9f88e0eb4e

Very nice, thanks Ben!

LGTM (post facto).