Summary:
Depends on D19377. Ref T13125. Ref T13124. Ref T13105. Coverage reporting in Diffusion didn't initially survive the transition to Document Engine; restore it.
This adds some tentative/theoretical support for multiple columns of coverage, but no way to actually produce them in the UI. For now, the labels, codes, and colors are hard coded.
Test Plan:
Added coverage with `diffusion.updatecoverage`, saw coverage in the UI:
{F5525542}
Hovered over coverage, got labels and highlighting.
Double-checked labels for "N" (Not Executable) and "U" (Uncovered). See PHI577.
Faked some multi-column coverage, but you can't currently get this yourself today:
{F5525544}
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13125, T13124, T13105
Differential Revision: https://secure.phabricator.com/D19378
665529ab60