The CommandBuffer object is a large portion of the Vulkan API. To make reviewing it's implementation easier, this cl simply adds all the CommandBuffer function signatures and UNIMLPEMENTED functions. Bug b/116336664 Change-Id: I25ad8e6b15f46f9c18717f6f147d7d794eb1da97 Reviewed-on: https://swiftshader-review.googlesource.com/c/21608Tested-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com> Reviewed-by: Chris Forbes <chrisforbes@google.com>
