Add parsing of arrays of arrays This changes the grammar so that multiple array sizes can be chained together, and adds arrays of arrays support to TPublicType. In TPublicType the array sizes are stored using a pointer to a vector, a plain vector won't work due to bison restrictions. A larger subset of program interface query tests now pass. Some are still failing due to unrelated bugs. BUG=angleproject:2125 TEST=angle_unittests, angle_end2end_tests, dEQP-GLES31.functional.shaders.arrays_of_arrays.* dEQP-GLES31.functional.uniform_location.nested_array.* dEQP-GLES31.functional.program_interface_query.* dEQP-GLES31.functional.ubo.*level*array.* Change-Id: Iee16477a3752b953f5068c0473a2ed62fead8155 Reviewed-on: https://chromium-review.googlesource.com/633944 Commit-Queue: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org>