Use constexpr TaskTraits constructor in base (part 2).
Part 1 https://codereview.chromium.org/2861833002/ didn't catch
cases that didn't use the base:: prefix.
Use a constexpr constructor that accepts traits in any order instead of
the builder pattern to construct TaskTraits in base.
BUG=713683
R=gab@chromium.org
Review-Url: https://codereview.chromium.org/2859053006
Cr-Commit-Position: refs/heads/master@{#470195}
CrOS-Libchrome-Original-Commit: f7d6f760f8e0fd9fd4683b1d41628c69bebf95d5
13 files changed