Add a gl-d3d-only target for the translator Chrome's validating command decoder links statically with the ANGLE translator. This change adds a target that builds the translator with only gl and d3d support for this purpose. This will prevent chrome from linking against glslang because of the Vulkan backend. As a bonus, it will reduce the binary size of Chrome by stipping the Vulkan and Metal translation and transformation codes. Bug: angleproject:5810 Change-Id: I5673bad53817ff2aa8486622ff2c64b44c77240f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2797511 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>