Revert of Fix GPU displacement with expanding crop rects.

Revert of Fix GPU displacement with expanding crop rects. (https://codereview.chromium.org/195973007/)

Reason for revert:
Speculative revert (for trybot consumption) per https://code.google.com/p/skia/issues/detail?id=2313#c13

Original issue's description:
> Fix GPU displacement with expanding crop rects.
> 
> Fix GPU displacement with expanding crop rects, and re-enable the
> imagefilterscropexpand GM. There were two bugs: the result texture was
> being created at input color bitmap size, not the cropped bounds size,
> and the matrix in GrContext was not being set to identity before draw.
> 
> R=junov@chromium.org
> 
> Committed: https://code.google.com/p/skia/source/detail?r=13844

TBR=junov@chromium.org,senorblanco@chromium.org
NOTREECHECKS=true
NOTRY=true

[epoger, 2014-03-21 19:02:30]

Created Revert of Fix GPU displacement with expanding crop rects.

[epoger, 2014-03-21 19:02:33]

The CQ bit was unchecked by epoger@google.com