This patch updates the validations about CreateBuffer() with dawn_wire
to match the latest WebGPU SPEC.
According to the SPEC, the validations in CreateBuffer() should be
executed in the below order:
1. If mappedAtCreation == true, return nullptr and a RangeError will be
generated in Chromium.
2. Validate BufferDescriptor and check if there is OOM at device timeline
3. Check if there is OOM at content timeline
Bug: dawn:1586
Change-Id: I97ff5f82a42208442ddf6e46e66381c3b3680450
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/109040
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
806c58324c