Move class tests to es6 directory BUG=v8:3330 LOG=N R=adamk Review URL: https://codereview.chromium.org/1213813003 Cr-Commit-Position: refs/heads/master@{#29336}
BUG= LOG=N R=arv@chromium.org Review URL: https://codereview.chromium.org/982153003 Cr-Commit-Position: refs/heads/master@{#27051}