acc8975cab
FunctionType now has a List<NamedType> which must be sorted by name. Previously, named parameters were stored in a Map<String, DartType>. FunctionNode still has a List<VariableDeclaration>, but this list must now be sorted by name. BUG= R=ahe@google.com Review URL: https://codereview.chromium.org/2502343002 .
Conversion to a textual format.
The text format is currently very ad-hoc and there is no conversion back, but it's a pleasant way to view the IR.