cch-empty

http://tools.oesf.biz/android-7.0.0_r1.0/xref/frameworks/base/core/java/com/android/internal/app/procstats/DumpUtils.java#66

     63     public static final String[] STATE_NAMES_CSV = new String[] {
     64             "pers", "top", "impfg", "impbg", "backup", "heavy",
     65             "service", "service-rs", "receiver", "home", "lastact",
     66             "cch-activity", "cch-aclient", "cch-empty"
     67     };