inference for FunctionDeclarationStatement's parameters

[jmesserly]

a concrete example is byteToHex from core libraries. This ends up being treated as a dynamic invoke:
https://github.com/dart-lang/bleeding_edge/blob/0e10f28269038a9dab22712ca133e9b9f93136c7/dart/sdk/lib/core/uri.dart#L2059

typically local functions are used as a way to avoid repeating a code pattern. While it's likely harder than function expression inference, maybe we could match some of the common patterns.

[jmesserly]

no plans for now