Test CSS.forcePseudoStates method for dual pseudo state pairs
TESTCASE: test1
Original states: read-only
New states: read-write
Should match: read-write
TESTCASE: test2
Original states: read-write
New states: read-only
Should match: read-only
TESTCASE: test3
Original states: read-write
New states: read-only
Should match: read-only
TESTCASE: test4
Original states: enabled valid optional read-write
New states: disabled invalid required read-only
Should match: disabled invalid required read-only
TESTCASE: test5
Original states: enabled optional read-only
New states: disabled required read-write
Should match: disabled required read-write
TESTCASE: test6
Original states: disabled optional read-only
New states: enabled required read-write
Should match: enabled required read-write
TESTCASE: test7
Original states: disabled optional read-only
New states: enabled required read-write
Should match: enabled required read-write
TESTCASE: test8
Original states: enabled valid optional read-write
New states: disabled invalid required read-only
Should match: disabled invalid required read-only
TESTCASE: test9
Original states: enabled optional read-only
New states: disabled required read-write
Should match: disabled required read-write
TESTCASE: test10
Original states: disabled optional read-only
New states: enabled required read-write
Should match: enabled required read-write
TESTCASE: test11
Original states: disabled optional read-only
New states: enabled required read-write
Should match: enabled required read-write
TESTCASE: test12
Original states: enabled valid optional read-only
New states: disabled invalid required read-write
Should match: disabled invalid required read-write
TESTCASE: test13
Original states: disabled optional read-only
New states: enabled required read-write
Should match: enabled required read-write
TESTCASE: test14
Original states: enabled invalid required read-write
New states: disabled valid optional read-only
Should match: disabled valid optional read-only
TESTCASE: test15
Original states: enabled invalid optional read-write out-of-range
New states: disabled valid required read-only in-range
Should match: disabled valid required read-only in-range
TESTCASE: test16
Original states: enabled valid optional read-write in-range
New states: disabled invalid required read-only out-of-range
Should match: disabled invalid required read-only out-of-range
Didn't fail after disabling the CSS agent (https://crbug.com/1123526).