Revert of Use uint16s for texture coordinates when rendering text.

Revert of Use uint16s for texture coordinates when rendering text. (patchset #5 id:80001 of https://codereview.chromium.org/917373002/)

Reason for revert:
speculative revert for DEPS failures

https://codereview.chromium.org/932973002/

Original issue's description:
> Use uint16s for texture coordinates when rendering text.
> 
> Allows us to push more vertices into a given vertex buffer, with
> a slight performance improvement.
> 
> Committed: https://skia.googlesource.com/skia/+/059034d252007d0dd86fff5ffdbb53cbcb10d34b

TBR=joshualitt@google.com,robertphillips@google.com,bsalomon@google.com,reed@google.com,djsollen@google.com,jvanverth@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://skia.googlesource.com/skia/+/e4ef1ca5be11aed67c0ed0c7eb1862696fb063e3

[reed2, 2015-02-18 02:38:20]

Created Revert of Use uint16s for texture coordinates when rendering text.

[commit-bot: I haz the power, 2015-02-18 02:38:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/920333003/1

[commit-bot: I haz the power, 2015-02-18 02:38:43]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/e4ef1ca5be11aed67c0ed0c7eb1862696fb063e3