DevTools: Add more emulated user agents and update existing ones.

R=vsevik, yurys@chromium.org
BUG=261459

Review URL: https://chromiumcodereview.appspot.com/19947003

git-svn-id: svn://svn.chromium.org/blink/trunk@154744 bbb929c8-8fbe-4397-9dbb-9b2b20218538