Generate GL_INVALID_VALUE when setting a sampler uniform with a value
outside the range [0, GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS).
Add a test for the new behavior.
Remove TextureLimitsTest.DrawWithTexturePastMaximum, which is made
obsolete by the new test.

BUG=angleproject:1711

Change-Id: I9a4ea13b8cb47742816476689bd3932ce267fd0a
Reviewed-on: https://chromium-review.googlesource.com/430196
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>