Revert of Support GLSL es 3.00 (patchset #5 id:80001 of https://codereview.chromium.org/659443007/)

Reason for revert:
Trying to fix DEPS roll failure:
https://codereview.chromium.org/660113002/

Link to failing builds:
http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/29578
http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/29354

Original issue's description:
> Support GLSL es 3.00
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/62372bcc6abe3537dac98dd9b9172cf3b85afa2b

TBR=bsalomon@google.com,joshualitt@google.com,joshualitt@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/661603009