Convert ErrorSummaryMatchConvertor to a function
Convert ErrorSummaryMatchConvertor to a function

This class didn't maintain any state other than invoking a single
TbplFormatter instance which can be replicated with partial.

edmorley/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder,KWierso/treeherder,edmorley/treeherder,KWierso/treeherder,KWierso/treeherder