Revert of Distance field fixes for Android (https://codereview.chromium.org/205343008/)

Revert of Distance field fixes for Android (https://codereview.chromium.org/205343008/)

Reason for revert:
compile error at line 110 in GrDistanceFieldTextureEffect.cpp

Original issue's description:
> Distance field fixes for Android
> - Expand glyph size by 2 on each side to compensate for bilerp lookup
> - Correct for Adreno tendency to drop entire tile if any pixel has divide-by-0
> - Fix blurriness on Adreno by using uv coords to compute gradient instead
>   of st coords
> - Add faster version for uniform scale
>
> BUG=skia:2173
>
> Committed: http://code.google.com/p/skia/source/detail?r=13955

R=bsalomon@google.com
TBR=bsalomon@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:2173

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/212953008

git-svn-id: http://skia.googlecode.com/svn/trunk@13956 2bbb7eff-a529-9590-31e7-b0007b416f81