Revert of Adjust distance field glyph and font atlas sizes to maximize storage.

Revert of Adjust distance field glyph and font atlas sizes to maximize storage. (patchset #8 id:140001 of https://codereview.chromium.org/986343002/)

Reason for revert:
Still seeing bad text rendering in GMs with Nexus 2 and Nexus 3.

Original issue's description:
> Adjust distance field glyph and font atlas sizes to maximize storage.
> 
> Because of high DPI devices, we need more room in the glyph
> atlas for the larger glyphs. These settings will allow 4 of 
> the distance field glyphs to fit in one Plot (increasing
> the storage from 32 large glyphs to 128), and still permit
> us to handle glyphs up to a 312 point size.  
> 
> BUG=chromium:458791
> 
> Committed: https://skia.googlesource.com/skia/+/d2737ad7dd8f4ea94a74034027014fd3d78923cb
> 
> Committed: https://skia.googlesource.com/skia/+/07e245ffe1ca7f781590fcff904c2922c2269781

TBR=joshualitt@google.com,bsalomon@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:458791
Committed: https://skia.googlesource.com/skia/+/c41df8d92d885ecb71af7795b22ebc7417187f61

[jvanverth1, 2015-03-10 15:22:08]

Created Revert of Adjust distance field glyph and font atlas sizes to maximize
storage.

[commit-bot: I haz the power, 2015-03-10 15:23:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/995863002/1

[commit-bot: I haz the power, 2015-03-10 15:23:10]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/c41df8d92d885ecb71af7795b22ebc7417187f61