This makes the generated code easier to read.

BUG=angleproject:1318
BUG=angleproject:1244
TEST=angle_end2end_tests

Change-Id: I6f232f3b8959cf8c72efb1e68b3fae6358b7b698
Reviewed-on: https://chromium-review.googlesource.com/328252Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>