Allow transitions on background-size with positionally matched keywords

third_party/WebKit/LayoutTests/animations/interpolation/webkit-mask-size-interpolation-expected.txt

Index: third_party/WebKit/LayoutTests/animations/interpolation/webkit-mask-size-interpolation-expected.txt
diff --git a/third_party/WebKit/LayoutTests/animations/interpolation/webkit-mask-size-interpolation-expected.txt b/third_party/WebKit/LayoutTests/animations/interpolation/webkit-mask-size-interpolation-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4a865964be2a4485f2d144c820541e302dea0ee2
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/animations/interpolation/webkit-mask-size-interpolation-expected.txt
@@ -0,0 +1,130 @@
+This is a testharness.js-based test.
+PASS This test uses interpolation-test.js. 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (-0.25) is [75px 62.5px, 75px 62.5px, 75px 62.5px, 75px 62.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (0) is [100px 100px, 100px 100px, 100px 100px, 100px 100px] 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (0.25) is [125px 137.5px, 125px 137.5px, 125px 137.5px, 125px 137.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (0.5) is [150px 175px, 150px 175px, 150px 175px, 150px 175px] 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (0.75) is [175px 212.5px, 175px 212.5px, 175px 212.5px, 175px 212.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from neutral to [200px 250px] at (1.25) is [225px 287.5px, 225px 287.5px, 225px 287.5px, 225px 287.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (-0.3) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (0) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (0.3) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (0.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (0.6) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [initial] to [200px 250px] at (1.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (-0.25) is [325px 312.5px, 325px 312.5px, 325px 312.5px, 325px 312.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0) is [300px 300px, 300px 300px, 300px 300px, 300px 300px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0.25) is [275px 287.5px, 275px 287.5px, 275px 287.5px, 275px 287.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0.5) is [250px 275px, 250px 275px, 250px 275px, 250px 275px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0.75) is [225px 262.5px, 225px 262.5px, 225px 262.5px, 225px 262.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [inherit] to [200px 250px] at (1.25) is [175px 237.5px, 175px 237.5px, 175px 237.5px, 175px 237.5px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (-0.3) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (0) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (0.3) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (0.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (0.6) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [unset] to [200px 250px] at (1.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (-0.25) is [0px 0px, 0px 0px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0) is [0px 0px, 0px 0px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0.25) is [10px 10px, 10px 10px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0.5) is [20px 20px, 20px 20px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0.75) is [30px 30px, 30px 30px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (1) is [40px 40px, 40px 40px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (1.25) is [50px 50px, 50px 50px, contain, cover] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (-0.3) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0.3) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0.5) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0.6) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (1) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (1.5) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (-0.25) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0.25) is [5px 5px, 10px 10px, 15px 15px, 25px 25px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0.5) is [10px 10px, 20px 20px, 30px 30px, 50px 50px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0.75) is [15px 15px, 30px 30px, 45px 45px, 75px 75px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (1) is [20px 20px, 40px 40px, 60px 60px, 100px 100px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (1.25) is [25px 25px, 50px 50px, 75px 75px, 125px 125px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (-0.25) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0.25) is [20px 20px, 20px 20px, 20px 20px, 20px 20px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0.5) is [40px 40px, 40px 40px, 40px 40px, 40px 40px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0.75) is [60px 60px, 60px 60px, 60px 60px, 60px 60px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (1) is [80px 80px, 80px 80px, 80px 80px, 80px 80px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (1.25) is [100px 100px, 100px 100px, 100px 100px, 100px 100px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (-0.25) is [0px 0px, 80px 0px, 0px 0px, 90px 0px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0) is [0px 0px, 80px 0px, 0px 0px, 80px 0px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0.25) is [10px 10px, 80px 20px, 0px 20px, 70px 10px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0.5) is [20px 20px, 80px 40px, 0px 40px, 60px 20px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0.75) is [30px 30px, 80px 60px, 0px 60px, 50px 30px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (1) is [40px 40px, 80px 80px, 0px 80px, 40px 40px] 
+PASS CSS Transitions: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (1.25) is [50px 50px, 80px 100px, 0px 100px, 30px 50px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (-0.25) is [75px 62.5px, 75px 62.5px, 75px 62.5px, 75px 62.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (0) is [100px 100px, 100px 100px, 100px 100px, 100px 100px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (0.25) is [125px 137.5px, 125px 137.5px, 125px 137.5px, 125px 137.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (0.5) is [150px 175px, 150px 175px, 150px 175px, 150px 175px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (0.75) is [175px 212.5px, 175px 212.5px, 175px 212.5px, 175px 212.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from neutral to [200px 250px] at (1.25) is [225px 287.5px, 225px 287.5px, 225px 287.5px, 225px 287.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (-0.3) is [auto, auto, auto, auto] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (0) is [auto, auto, auto, auto] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (0.3) is [auto, auto, auto, auto] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (0.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (0.6) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [initial] to [200px 250px] at (1.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (-0.25) is [325px 312.5px, 325px 312.5px, 325px 312.5px, 325px 312.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0) is [300px 300px, 300px 300px, 300px 300px, 300px 300px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0.25) is [275px 287.5px, 275px 287.5px, 275px 287.5px, 275px 287.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0.5) is [250px 275px, 250px 275px, 250px 275px, 250px 275px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (0.75) is [225px 262.5px, 225px 262.5px, 225px 262.5px, 225px 262.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [inherit] to [200px 250px] at (1.25) is [175px 237.5px, 175px 237.5px, 175px 237.5px, 175px 237.5px] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (-0.3) is [auto, auto, auto, auto] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (0) is [auto, auto, auto, auto] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (0.3) is [auto, auto, auto, auto] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (0.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (0.6) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (1) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [unset] to [200px 250px] at (1.5) is [200px 250px, 200px 250px, 200px 250px, 200px 250px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (-0.25) is [0px 0px, 0px 0px, contain, cover] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0) is [0px 0px, 0px 0px, contain, cover] 
+FAIL CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0.25) is [0px 0px, 0px 0px, contain, cover] assert_equals: expected "10px 10px , 10px 10px , contain , cover " but got "0px 0px , 0px 0px , contain , cover "
+FAIL CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0.5) is [40px 40px, 40px 40px, contain, cover] assert_equals: expected "20px 20px , 20px 20px , contain , cover " but got "40px 40px , 40px 40px , contain , cover "
+FAIL CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (0.75) is [40px 40px, 40px 40px, contain, cover] assert_equals: expected "30px 30px , 30px 30px , contain , cover " but got "40px 40px , 40px 40px , contain , cover "
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (1) is [40px 40px, 40px 40px, contain, cover] 
+FAIL CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [40px 40px, 40px 40px, contain, cover] at (1.25) is [40px 40px, 40px 40px, contain, cover] assert_equals: expected "50px 50px , 50px 50px , contain , cover " but got "40px 40px , 40px 40px , contain , cover "
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (-0.3) is [0px 0px, 0px 0px, contain, cover] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0) is [0px 0px, 0px 0px, contain, cover] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0.3) is [0px 0px, 0px 0px, contain, cover] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0.5) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (0.6) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (1) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, contain, cover] to [20px 20px, 20px 20px, cover, contain] at (1.5) is [20px 20px, 20px 20px, cover, contain] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (-0.25) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0.25) is [5px 5px, 10px 10px, 15px 15px, 25px 25px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0.5) is [10px 10px, 20px 20px, 30px 30px, 50px 50px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (0.75) is [15px 15px, 30px 30px, 45px 45px, 75px 75px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (1) is [20px 20px, 40px 40px, 60px 60px, 100px 100px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 0px 0px, 0px 0px, 0px 0px] to [20px 20px, 40px 40px, 60px 60px, 100px 100px] at (1.25) is [25px 25px, 50px 50px, 75px 75px, 125px 125px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (-0.25) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0) is [0px 0px, 0px 0px, 0px 0px, 0px 0px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0.25) is [20px 20px, 20px 20px, 20px 20px, 20px 20px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0.5) is [40px 40px, 40px 40px, 40px 40px, 40px 40px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (0.75) is [60px 60px, 60px 60px, 60px 60px, 60px 60px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (1) is [80px 80px, 80px 80px, 80px 80px, 80px 80px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px] to [80px 80px] at (1.25) is [100px 100px, 100px 100px, 100px 100px, 100px 100px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (-0.25) is [0px 0px, 80px 0px, 0px 0px, 90px 0px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0) is [0px 0px, 80px 0px, 0px 0px, 80px 0px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0.25) is [10px 10px, 80px 20px, 0px 20px, 70px 10px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0.5) is [20px 20px, 80px 40px, 0px 40px, 60px 20px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (0.75) is [30px 30px, 80px 60px, 0px 60px, 50px 30px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (1) is [40px 40px, 80px 80px, 0px 80px, 40px 40px] 
+PASS CSS Animations: property <-webkit-mask-size> from [0px 0px, 80px 0px] to [40px 40px, 80px 80px, 0px 80px] at (1.25) is [50px 50px, 80px 100px, 0px 100px, 30px 50px] 
+Harness: the test ran to completion.
+