Add test using array of array varyings in tessellation shaders For per-vertex variables in the Tess shader that support two-dimensional arrays, when calling GetResourceName, the string-like tt[0][0] should be returned instead of tt[0]. Bug: angleproject:413447006 Change-Id: Iafd316495ca3c254f9424d84cab71c8385b11e03 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6490616 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Auto-Submit: Robic Sun <Robic.Sun@arm.com>