Metal: remove "Compute" from EnsureComputeShaderInitialized() name Previously this function was named EnsureComputePipelineInitialized() because it would create a compute pipeline. However at some point, the pipeline's creation was moved to a pipeline cache. Thus this function now only creates a shader function. This can be used to create both compute & graphics shader functions so we should remove the "Compute" part from its name. Bug: None Change-Id: I73d101142ec1fc72d150579bc409b1dea3196940 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6357511 Reviewed-by: Alexey Knyazev <lexa.knyazev@gmail.com> Commit-Queue: Quyen Le <lehoangquyen@chromium.org>