[PATCH] D20404: [Driver] Fix driver support for color diagnostics

[Duncan P. N. Exon Smith via cfe-commits]

dexonsmith added a comment.

I don't think we even need a helper.

Clang::ConstructJob takes a `Compilation`, which has a `Driver`, which has a `DiagnosticsEngine`, which has a `DiagnosticsOptions`.

In other words, I think you can delete the code in Clang::ConstructJob (change it to a lookup) now that you've changed clang::ParseDiagnosticArgs to update `DiagnosticsOptions`.


http://reviews.llvm.org/D20404