Add separate entries for inner arrays in block layout Generating separate entries for array of array members in blocks is needed so that block member queries work correctly. This change will be tested more fully once support for parsing arrays of arrays lands in the compiler. BUG=angleproject:2125 Change-Id: I052837ddd4ee44a5c2390d3af44c0f1d21fa5fc7 Reviewed-on: https://chromium-review.googlesource.com/787975 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>