WIP: test clip_distances

Author: ErichDonGubler

cts_runner/test.lst

@@ -186,6 +186,7 @@ webgpu:shader,validation,expression,binary,short_circuiting_and_or:invalid_types
 webgpu:shader,validation,expression,binary,short_circuiting_and_or:scalar_vector:op="%26%26";lhs="bool";rhs="bool"
 webgpu:shader,validation,expression,call,builtin,all:arguments:test="ptr_deref"
 webgpu:shader,validation,expression,call,builtin,max:values:*
+webgpu:shader,validation,extension,clip_distances:*
 webgpu:shader,validation,statement,statement_behavior:invalid_statements:body="break"
 webgpu:shader,validation,statement,statement_behavior:invalid_statements:body="break_if"
 webgpu:shader,validation,statement,statement_behavior:invalid_statements:body="continue"