Tons of people call AppendVariationHeaders() with variations::SignedIn::kNo with the following comment:
// Note: It's OK to pass SignedIn::kNo if it's unknown, as it does not affect
// transmission of experiments coming from the variations server.
We should simply make a version without the sign-in parameter and remove those many comments in the code. The comment about ::kNo is already by the function declaration.
Comment 1 by asvitk...@chromium.org
, Jun 27 2018