Also cleanup shader storage blocks. Test: angle_deqp_khr_gles31_tests --use-angle=swiftshader --gtest_filter=dEQP.KHR_GLES31/core_explicit_uniform_location_uniform* Bug: angleproject:4132 Bug: angleproject:4217 Change-Id: Ie0375ab9226f3f49cb0c0d208ac08f99d98dad8d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1963139Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>
