Disable convertLowpAndMediumpFloatUniformsTo16Bits on non-ARM devices It is unknown if other GPUs need this explicitly 32-bit to 16-bit casts, and the performance impact of this feature needs to be verified across different GPUs. Bug: b/405795981 Change-Id: I1b450aea58d6f4a20eddac5c9edceb4ebac4d999 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6990532 Commit-Queue: Yuxin Hu <yuxinhu@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>