GitLab

- Removed unnecessary List.redraw calls from
      -- network_list.js
      -- autofill_edit_address_overlay.js
      -- content_settings_exceptions_area.js
- Added an early return to List.redraw() for the case clientHeight == 0 (eg. if the list is not visible).
- Some small cleanup.

Overall there were about 68 expensive (ie. no early return) calls to redraw() which I could reduce to 26. The speedup is about 7% / 28ms for the "onload" event on my desktop machine.

BUG=chrome:143116


Review URL: https://chromiumcodereview.appspot.com/10824328

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152153 0039d316-1c4b-4281-b951-d872f2087c98