based on the content metrics. Re-organized the class structure in qm_select into a resolution class and robustness settings class, both derived from a main (qm/content analysis) class. Review URL: http://webrtc-codereview.appspot.com/55006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@188 4adac7df-926f-26a2-2b94-8c16560cd09d