Revert of Initial work to get ETC1 data up to the GPU (https://codereview.chromium.org/302783002/)

Reason for revert:
ETC1 linking problems with chrome.

Original issue's description:
> Initial work to get ETC1 data up to the GPU
>
> Committed: http://code.google.com/p/skia/source/detail?r=15001

R=bsalomon@google.com, robertphillips@google.com
TBR=bsalomon@google.com, robertphillips@google.com
NOTREECHECKS=true
NOTRY=true

Author: krajcevski@google.com

Review URL: https://codereview.chromium.org/303273008

git-svn-id: http://skia.googlecode.com/svn/trunk/src@15004 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed