Web Animations CSS: Add to experimental web platform features

LayoutTests/virtual/web-animations-css/animations/interpolation/line-height-interpolation-expected.txt

Index: LayoutTests/virtual/web-animations-css/animations/interpolation/line-height-interpolation-expected.txt
diff --git a/LayoutTests/virtual/web-animations-css/animations/interpolation/line-height-interpolation-expected.txt b/LayoutTests/virtual/web-animations-css/animations/interpolation/line-height-interpolation-expected.txt
deleted file mode 100644
index 7a0d9426bfbba5aff30ccf9c19b0849e8a53fe9a..0000000000000000000000000000000000000000
--- a/LayoutTests/virtual/web-animations-css/animations/interpolation/line-height-interpolation-expected.txt
+++ /dev/null
@@ -1,57 +0,0 @@
-PASS: line-height from [4] to [14] was [0] at -1
-PASS: line-height from [4] to [14] was [1] at -0.3
-PASS: line-height from [4] to [14] was [4] at 0
-PASS: line-height from [4] to [14] was [7] at 0.3
-PASS: line-height from [4] to [14] was [10] at 0.6
-PASS: line-height from [4] to [14] was [14] at 1
-PASS: line-height from [4] to [14] was [19] at 1.5
-PASS: line-height from [4px] to [14px] was [0px] at -1
-PASS: line-height from [4px] to [14px] was [1px] at -0.3
-PASS: line-height from [4px] to [14px] was [4px] at 0
-PASS: line-height from [4px] to [14px] was [7px] at 0.3
-PASS: line-height from [4px] to [14px] was [10px] at 0.6
-PASS: line-height from [4px] to [14px] was [14px] at 1
-PASS: line-height from [4px] to [14px] was [19px] at 1.5
-PASS: line-height from [normal] to [normal] was [normal] at -0.3
-PASS: line-height from [normal] to [normal] was [normal] at 0
-PASS: line-height from [normal] to [normal] was [normal] at 0.3
-PASS: line-height from [normal] to [normal] was [normal] at 0.6
-PASS: line-height from [normal] to [normal] was [normal] at 1
-PASS: line-height from [normal] to [normal] was [normal] at 1.5
-PASS: line-height from [4] to [14px] was [4] at -0.3
-PASS: line-height from [4] to [14px] was [4] at 0
-PASS: line-height from [4] to [14px] was [4] at 0.3
-PASS: line-height from [4] to [14px] was [14px] at 0.6
-PASS: line-height from [4] to [14px] was [14px] at 1
-PASS: line-height from [4] to [14px] was [14px] at 1.5
-PASS: line-height from [14px] to [normal] was [14px] at -0.3
-PASS: line-height from [14px] to [normal] was [14px] at 0
-PASS: line-height from [14px] to [normal] was [14px] at 0.3
-PASS: line-height from [14px] to [normal] was [normal] at 0.6
-PASS: line-height from [14px] to [normal] was [normal] at 1
-PASS: line-height from [14px] to [normal] was [normal] at 1.5
-PASS: line-height from [normal] to [4] was [normal] at -0.3
-PASS: line-height from [normal] to [4] was [normal] at 0
-PASS: line-height from [normal] to [4] was [normal] at 0.3
-PASS: line-height from [normal] to [4] was [4] at 0.6
-PASS: line-height from [normal] to [4] was [4] at 1
-PASS: line-height from [normal] to [4] was [4] at 1.5
-PASS: line-height from [4] to [normal] was [4] at -0.3
-PASS: line-height from [4] to [normal] was [4] at 0
-PASS: line-height from [4] to [normal] was [4] at 0.3
-PASS: line-height from [4] to [normal] was [normal] at 0.6
-PASS: line-height from [4] to [normal] was [normal] at 1
-PASS: line-height from [4] to [normal] was [normal] at 1.5
-PASS: line-height from [normal] to [14px] was [normal] at -0.3
-PASS: line-height from [normal] to [14px] was [normal] at 0
-PASS: line-height from [normal] to [14px] was [normal] at 0.3
-PASS: line-height from [normal] to [14px] was [14px] at 0.6
-PASS: line-height from [normal] to [14px] was [14px] at 1
-PASS: line-height from [normal] to [14px] was [14px] at 1.5
-PASS: line-height from [14px] to [4] was [14px] at -0.3
-PASS: line-height from [14px] to [4] was [14px] at 0
-PASS: line-height from [14px] to [4] was [14px] at 0.3
-PASS: line-height from [14px] to [4] was [4] at 0.6
-PASS: line-height from [14px] to [4] was [4] at 1
-PASS: line-height from [14px] to [4] was [4] at 1.5
-