Shaves ~47KB on binary size.

Bug: angleproject:2022
Change-Id: Ifc861c4308a806d17f499bf2126009a59125b9f2
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2249566
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>