Web Animations API: Update interpolation test harness to test element.animate()

LayoutTests/animations/interpolation/line-height-interpolation-expected.txt

Index: LayoutTests/animations/interpolation/line-height-interpolation-expected.txt
diff --git a/LayoutTests/animations/interpolation/line-height-interpolation-expected.txt b/LayoutTests/animations/interpolation/line-height-interpolation-expected.txt
index d93ac35b4b3810a51250959bb22beb40d9af56c8..2a2e940b08b270bda97505b0cd92e72aa89ed97c 100644
--- a/LayoutTests/animations/interpolation/line-height-interpolation-expected.txt
+++ b/LayoutTests/animations/interpolation/line-height-interpolation-expected.txt
@@ -1,3 +1,4 @@
+CSS Animations:
 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
@@ -80,3 +81,86 @@ PASS: line-height from [75vw] to [25vh] was [262.5px] at 0.75
 PASS: line-height from [75vw] to [25vh] was [150px] at 1
 PASS: line-height from [75vw] to [25vh] was [0px] at 1.5
 
+Web Animations API:
+PASS: lineHeight from [4] to [14] was [0] at -1
+PASS: lineHeight from [4] to [14] was [1] at -0.3
+PASS: lineHeight from [4] to [14] was [4] at 0
+PASS: lineHeight from [4] to [14] was [7] at 0.3
+PASS: lineHeight from [4] to [14] was [10] at 0.6
+PASS: lineHeight from [4] to [14] was [14] at 1
+PASS: lineHeight from [4] to [14] was [19] at 1.5
+PASS: lineHeight from [4px] to [14px] was [0px] at -1
+PASS: lineHeight from [4px] to [14px] was [1px] at -0.3
+PASS: lineHeight from [4px] to [14px] was [4px] at 0
+PASS: lineHeight from [4px] to [14px] was [7px] at 0.3
+PASS: lineHeight from [4px] to [14px] was [10px] at 0.6
+PASS: lineHeight from [4px] to [14px] was [14px] at 1
+PASS: lineHeight from [4px] to [14px] was [19px] at 1.5
+PASS: lineHeight from [normal] to [normal] was [normal] at -0.3
+PASS: lineHeight from [normal] to [normal] was [normal] at 0
+PASS: lineHeight from [normal] to [normal] was [normal] at 0.3
+PASS: lineHeight from [normal] to [normal] was [normal] at 0.6
+PASS: lineHeight from [normal] to [normal] was [normal] at 1
+PASS: lineHeight from [normal] to [normal] was [normal] at 1.5
+PASS: lineHeight from [4] to [14px] was [4] at -0.3
+PASS: lineHeight from [4] to [14px] was [4] at 0
+PASS: lineHeight from [4] to [14px] was [4] at 0.3
+PASS: lineHeight from [4] to [14px] was [14px] at 0.6
+PASS: lineHeight from [4] to [14px] was [14px] at 1
+PASS: lineHeight from [4] to [14px] was [14px] at 1.5
+PASS: lineHeight from [14px] to [normal] was [14px] at -0.3
+PASS: lineHeight from [14px] to [normal] was [14px] at 0
+PASS: lineHeight from [14px] to [normal] was [14px] at 0.3
+PASS: lineHeight from [14px] to [normal] was [normal] at 0.6
+PASS: lineHeight from [14px] to [normal] was [normal] at 1
+PASS: lineHeight from [14px] to [normal] was [normal] at 1.5
+PASS: lineHeight from [normal] to [4] was [normal] at -0.3
+PASS: lineHeight from [normal] to [4] was [normal] at 0
+PASS: lineHeight from [normal] to [4] was [normal] at 0.3
+PASS: lineHeight from [normal] to [4] was [4] at 0.6
+PASS: lineHeight from [normal] to [4] was [4] at 1
+PASS: lineHeight from [normal] to [4] was [4] at 1.5
+PASS: lineHeight from [4] to [normal] was [4] at -0.3
+PASS: lineHeight from [4] to [normal] was [4] at 0
+PASS: lineHeight from [4] to [normal] was [4] at 0.3
+PASS: lineHeight from [4] to [normal] was [normal] at 0.6
+PASS: lineHeight from [4] to [normal] was [normal] at 1
+PASS: lineHeight from [4] to [normal] was [normal] at 1.5
+PASS: lineHeight from [normal] to [14px] was [normal] at -0.3
+PASS: lineHeight from [normal] to [14px] was [normal] at 0
+PASS: lineHeight from [normal] to [14px] was [normal] at 0.3
+PASS: lineHeight from [normal] to [14px] was [14px] at 0.6
+PASS: lineHeight from [normal] to [14px] was [14px] at 1
+PASS: lineHeight from [normal] to [14px] was [14px] at 1.5
+PASS: lineHeight from [14px] to [4] was [14px] at -0.3
+PASS: lineHeight from [14px] to [4] was [14px] at 0
+PASS: lineHeight from [14px] to [4] was [14px] at 0.3
+PASS: lineHeight from [14px] to [4] was [4] at 0.6
+PASS: lineHeight from [14px] to [4] was [4] at 1
+PASS: lineHeight from [14px] to [4] was [4] at 1.5
+PASS: lineHeight from [4vw] to [14vw] was [0] at -1
+PASS: lineHeight from [4vw] to [14vw] was [1vw] at -0.3
+PASS: lineHeight from [4vw] to [14vw] was [4vw] at 0
+PASS: lineHeight from [4vw] to [14vw] was [7vw] at 0.3
+PASS: lineHeight from [4vw] to [14vw] was [10vw] at 0.6
+PASS: lineHeight from [4vw] to [14vw] was [14vw] at 1
+PASS: lineHeight from [4vw] to [14vw] was [19vw] at 1.5
+PASS: lineHeight from [50vmin] to [100px] was [350px] at -0.25
+PASS: lineHeight from [50vmin] to [100px] was [300px] at 0
+PASS: lineHeight from [50vmin] to [100px] was [250px] at 0.25
+PASS: lineHeight from [50vmin] to [100px] was [150px] at 0.75
+PASS: lineHeight from [50vmin] to [100px] was [100px] at 1
+PASS: lineHeight from [50vmin] to [100px] was [0px] at 1.5
+PASS: lineHeight from [100px] to [50vmax] was [25px] at -0.25
+PASS: lineHeight from [100px] to [50vmax] was [100px] at 0
+PASS: lineHeight from [100px] to [50vmax] was [175px] at 0.25
+PASS: lineHeight from [100px] to [50vmax] was [325px] at 0.75
+PASS: lineHeight from [100px] to [50vmax] was [400px] at 1
+PASS: lineHeight from [100px] to [50vmax] was [550px] at 1.5
+PASS: lineHeight from [75vw] to [25vh] was [712.5px] at -0.25
+PASS: lineHeight from [75vw] to [25vh] was [600px] at 0
+PASS: lineHeight from [75vw] to [25vh] was [487.5px] at 0.25
+PASS: lineHeight from [75vw] to [25vh] was [262.5px] at 0.75
+PASS: lineHeight from [75vw] to [25vh] was [150px] at 1
+PASS: lineHeight from [75vw] to [25vh] was [0px] at 1.5
+