Use one FilterComboBoxModel for all L&Fs

fails with jdk1.8.0b100_compiler_upgrades, jdk1.8.0b99, jdk1.7.0_25b15

----------System.out:(18/262)----------
Metal
count = 1; true
count = 2; true
count = 1; false
count = 0; false
Nimbus
count = 1; true
count = 2; true
count = 1; false
count = 0; false
CDE/Motif
count = 1; true
count = 2; true
count = 1; false
count = 0; false
Mac OS X
count = 1; true
count = 2; true
----------System.err:(16/1055)----------
java.lang.Error: file filter is not selected
at Test8013442.run(Test8013442.java:101)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:741)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:711)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:220)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:135)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:123)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:119)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:111)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
result: Failed. Unexpected exit from test [exit code: 1]


test result: Failed. Unexpected exit from test [exit code: 1]