Web Animations CSS: Add to experimental web platform features

LayoutTests/virtual/web-animations-css/animations/interpolation/webkit-clip-path-interpolation-expected.txt

Index: LayoutTests/virtual/web-animations-css/animations/interpolation/webkit-clip-path-interpolation-expected.txt
diff --git a/LayoutTests/virtual/web-animations-css/animations/interpolation/webkit-clip-path-interpolation-expected.txt b/LayoutTests/virtual/web-animations-css/animations/interpolation/webkit-clip-path-interpolation-expected.txt
deleted file mode 100644
index 3a6aa52282809fbc74e0f6f9b19388f4ce5e4c79..0000000000000000000000000000000000000000
--- a/LayoutTests/virtual/web-animations-css/animations/interpolation/webkit-clip-path-interpolation-expected.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-PASS: -webkit-clip-path from [rectangle(0px, 0px, 100px, 100px, 0px, 0px)] to [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] was [rectangle(-7.5px, -7.5px, 115px, 115px, 0px, 0px)] at -0.3
-PASS: -webkit-clip-path from [rectangle(0px, 0px, 100px, 100px, 0px, 0px)] to [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] was [rectangle(0px, 0px, 100px, 100px)] at 0
-PASS: -webkit-clip-path from [rectangle(0px, 0px, 100px, 100px, 0px, 0px)] to [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] was [rectangle(7.5px, 7.5px, 85px, 85px, 3px, 3px)] at 0.3
-PASS: -webkit-clip-path from [rectangle(0px, 0px, 100px, 100px, 0px, 0px)] to [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] was [rectangle(15px, 15px, 70px, 70px, 6px, 6px)] at 0.6
-PASS: -webkit-clip-path from [rectangle(0px, 0px, 100px, 100px, 0px, 0px)] to [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] was [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] at 1
-PASS: -webkit-clip-path from [rectangle(0px, 0px, 100px, 100px, 0px, 0px)] to [rectangle(25px, 25px, 50px, 50px, 10px, 10px)] was [rectangle(37.5px, 37.5px, 25px, 25px, 15px, 15px)] at 1.5
-PASS: -webkit-clip-path from [circle(25px, 75px, 10px)] to [circle(50px, 50px, 50px)] was [circle(17.5px, 82.5px, 0px)] at -0.3
-PASS: -webkit-clip-path from [circle(25px, 75px, 10px)] to [circle(50px, 50px, 50px)] was [circle(25px, 75px, 10px)] at 0
-PASS: -webkit-clip-path from [circle(25px, 75px, 10px)] to [circle(50px, 50px, 50px)] was [circle(32.5px, 67.5px, 22px)] at 0.3
-PASS: -webkit-clip-path from [circle(25px, 75px, 10px)] to [circle(50px, 50px, 50px)] was [circle(40px, 60px, 34px)] at 0.6
-PASS: -webkit-clip-path from [circle(25px, 75px, 10px)] to [circle(50px, 50px, 50px)] was [circle(50px, 50px, 50px)] at 1
-PASS: -webkit-clip-path from [circle(25px, 75px, 10px)] to [circle(50px, 50px, 50px)] was [circle(62.5px, 37.5px, 70px)] at 1.5
-PASS: -webkit-clip-path from [none] to [circle(1px, 2px, 3px)] was [none] at -0.3
-PASS: -webkit-clip-path from [none] to [circle(1px, 2px, 3px)] was [none] at 0
-PASS: -webkit-clip-path from [none] to [circle(1px, 2px, 3px)] was [none] at 0.3
-PASS: -webkit-clip-path from [none] to [circle(1px, 2px, 3px)] was [circle(1px, 2px, 3px)] at 0.6
-PASS: -webkit-clip-path from [none] to [circle(1px, 2px, 3px)] was [circle(1px, 2px, 3px)] at 1
-PASS: -webkit-clip-path from [none] to [circle(1px, 2px, 3px)] was [circle(1px, 2px, 3px)] at 1.5
-