Use generation() to detect ES3 support.
Use generation() to detect ES3 support.

Desktop GLSL 1.30 supports the things we currently consider as "ES3
only"--nonsquare matrices, derivatives, and unsigned integers.

Change-Id: I4b5a844cf3aabee6b6d2c562e78859a29efc36fc
Bug: skia:12347
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/439937
Commit-Queue: John Stiles <f4fcf42d3bb5924557f1eeb3be66747535e585da@google.com>
Auto-Submit: John Stiles <f4fcf42d3bb5924557f1eeb3be66747535e585da@google.com>
Reviewed-by: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>

google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia