[i18n] components directory to $i18n{}

This CL changes i18n-content and i18n-value (the old way) to
$i18n{} (the new way). There should be no functionality or UI
changes apparent to the user.

TBR=stanisc@chromium.org,dbeam@chromium.org,fgorski@chromium.org,thestig@chromium.org,hirono@chromium.org,mattreynolds@chromium.org,juliatuttle@chromium.org,bengr@chromium.org,treib@chromium.org
BUG=677338

Review-Url: https://codereview.chromium.org/2908353003
Cr-Commit-Position: refs/heads/master@{#479896}
15 files changed