GitLab

Also clean up some unnecessary complexity in history HTML, and
move history-specific CSS from old_webui.css to history.css.

BUG=None.
TEST=Manual test of functionality on history and downloads pages.

Review URL: http://codereview.chromium.org/8772046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113056 0039d316-1c4b-4281-b951-d872f2087c98