needsFocus is always undefined in grammar-paste.html

Remove unnecessary needsFocus parameter which is always undefined.
In addition, remove if (true) condition in the test.

WebKit changeset: http://trac.webkit.org/changeset/155469

BUG=

Review URL: https://chromiumcodereview.appspot.com/23514049

git-svn-id: svn://svn.chromium.org/blink/trunk@157614 bbb929c8-8fbe-4397-9dbb-9b2b20218538