[tab-size-interpolation.html]
  [CSS Transitions: property <tab-size> from [1\] to [10px\] at (-0.3) should be [1\]]
    expected: FAIL

  [CSS Transitions: property <tab-size> from [1\] to [10px\] at (0) should be [1\]]
    expected: FAIL

  [CSS Transitions: property <tab-size> from [1\] to [10px\] at (0.3) should be [1\]]
    expected: FAIL