[reader-spirv] Convert array, runtime array types

Bug: tint:3
Change-Id: If0d7d38cc777bce3d86dfd83669c1572331d4ed6
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/17800
Reviewed-by: dan sinclair <dsinclair@google.com>
diff --git a/src/reader/spirv/parser_impl_test_helper.h b/src/reader/spirv/parser_impl_test_helper.h
index 97ac096..8c40a2b 100644
--- a/src/reader/spirv/parser_impl_test_helper.h
+++ b/src/reader/spirv/parser_impl_test_helper.h
@@ -42,8 +42,8 @@
   }
 
   /// Retrieves the parser from the helper
-  /// @param input the string to parse
-  /// @returns the parser implementation
+  /// @param input the SPIR-V binary to parse
+  /// @returns a parser for the given binary
   ParserImpl* parser(const std::vector<uint32_t>& input) {
     impl_ = std::make_unique<ParserImpl>(&ctx_, input);
     return impl_.get();