<rdar://problem/4065343> Mail: Deleting a line sometimes makes the insertion point jump to the top of the message

        Test cases added: delete-br-011.html

        * khtml/editing/delete_selection_command.cpp:
        (khtml::DeleteSelectionCommand::handleSpecialCaseBRDelete):
        Make sure m_endingSelection is usable.

        (khtml::DeleteSelectionCommand::doApply):
        Skip general delete related code when just doing handleSpecialCaseBRDelete().

        * layout-tests/editing/deleting/delete-br-011-expected.txt: Added.
        * layout-tests/editing/deleting/delete-br-011.html: Added.
        Mimics composing a Mail.app reply, clicking past the end of the content, and hitting delete key.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@9821 268f45cc-cd09-0410-ab3c-d52691b4dbfc