Revert "Allow varying structs to match between stages." This patch has a bug which breaks the GLSL to GLSL translator. See broken GPU FYI bot builds on the Chromium waterfall: http://build.chromium.org/p/chromium.gpu.fyi/builders/Win7%20Release%20%28NVIDIA%29/builds/13074 This reverts commit 489ffc4d69656c2dbfdbe07e3fa6e38baeb3e072. Change-Id: I8241c6d658f4f31af91b89af1141d3d778ff7c70 Reviewed-on: https://chromium-review.googlesource.com/249131 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>