Change Returned Error For Invalid Hint
Change Returned Error For Invalid Hint

When using FRAGMENT_SHADER_DERIVATIVE_HINT_OES as a hint with
OES_standard_derivatives disabled, we should return INVALID_ENUM, not
INVALID_OPERATION.

Bug: angleproject:2158

Change-Id: I5759f1e8bb19d2caed278506054aebc5d82d431c
Reviewed-on: https://chromium-review.googlesource.com/673374
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Commit-Queue: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>

MSOpenTech/angle,MSOpenTech/angle,ppy/angle,MSOpenTech/angle,ppy/angle,MSOpenTech/angle,ppy/angle,ppy/angle