Reviewed by Trey

    Reviewed by Trey

        Lay some groundwork for better testing of inserting newlines. Layout
        tests that use this new code will be coming soon.

        * khtml/editing/jsediting.cpp: Add commands for bold and inserting newlines.
        * layout-tests/editing/editing.js: Added new insertNewline command.
        which calls through to TypingCommand::insertNewline. There was no way to get
        to this command from JS before this addition.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@6815 268f45cc-cd09-0410-ab3c-d52691b4dbfc