This reverts commit 4a09c1a2.

Reason for revert: Seems to break the build

Original change's description:
> GLES1: Entry points for lighting and materials
> 
> - glLight*/glMaterial and their queries
> - Use new packed enums in these entry points, except for lightmodel
> which stays GLenum to be consistent with other generic glGet's
> - State.cpp: New glGet* queries related to light model and
> light/normal rescale enablement
> - GLES1State.cpp: Functions to get/set lighting/material state
> - Validation for lighting/materials
> 
> + Add a few convenience methods to random_utils for sampling
> non-negative floats and a sampler for random booleans
> 
> BUG=angleproject:2306
> 
> Change-Id: If7ba0c0a0dc75f88fbaa986b904f1ea96ee6512e
> Reviewed-on: https://chromium-review.googlesource.com/1065502
> Commit-Queue: Lingfeng Yang <lfy@google.com>
> Reviewed-by: Geoff Lang <geofflang@chromium.org>

TBR=geofflang@chromium.org,jmadill@chromium.org,cwallez@chromium.org,lfy@google.com

Change-Id: Ifabd708ded87c7484ad6d466508e2c2d6ea2557c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:2306
Reviewed-on: https://chromium-review.googlesource.com/1071828Reviewed-by: Lingfeng Yang <lfy@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>