85b34c23f9
Summary: Reduce the amount of code duplication here and allow for an override configuration on the filename.map stuff. Test Plan: Checked paste, diffusion and differential syntax highlighting and everything appeared reasonable. Reviewed By: codeblock Reviewers: tuomaspelkonen, codeblock, jungejason, aran CC: aran, codeblock, epriestley Differential Revision: 601