GitLab

This removes the eager class registration from RegisterNatives when possible.

BUG=402003
TBR=sievers@chromium.org, brettw@chromium.org

Review URL: https://codereview.chromium.org/472553002

Cr-Commit-Position: refs/heads/master@{#290810}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290810 0039d316-1c4b-4281-b951-d872f2087c98