[presubmit] Enable build/c++11 linter checking.

[presubmit] Enable build/c++11 linter checking.

This enables the general linter checking for "build/c++11" violations
during presubmit and instead marks the few known exceptions that we
allow explicitly.

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/1317463007

Cr-Commit-Position: refs/heads/master@{#30621}