Add additional information to FAIL lines for animation interpolation tests

LayoutTests/virtual/web-animations-css/animations/interpolation/filter-interpolation-expected.txt

Index: LayoutTests/virtual/web-animations-css/animations/interpolation/filter-interpolation-expected.txt
diff --git a/LayoutTests/virtual/web-animations-css/animations/interpolation/filter-interpolation-expected.txt b/LayoutTests/virtual/web-animations-css/animations/interpolation/filter-interpolation-expected.txt
index a1506922615dec8a3173380c540bf16a19260a43..8e83cf4d047ccb61c42d8e16014753a45edad8a0 100644
--- a/LayoutTests/virtual/web-animations-css/animations/interpolation/filter-interpolation-expected.txt
+++ b/LayoutTests/virtual/web-animations-css/animations/interpolation/filter-interpolation-expected.txt
@@ -43,16 +43,16 @@ PASS: -webkit-filter from [contrast(0)] to [none] was [contrast(0)] at 0
 PASS: -webkit-filter from [contrast(0)] to [none] was [contrast(0.5)] at 0.5
 PASS: -webkit-filter from [contrast(0)] to [none] was [none] at 1
 PASS: -webkit-filter from [contrast(0)] to [none] was [contrast(1.5)] at 1.5
-FAIL: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(rgba(0, 0, 0, 0) -20px -10px 0px)] at -1, expected [drop-shadow(-20px -10px white)]
+FAIL: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(rgba(0, 0, 0, 0) -20px -10px 0px)] at -1, expected [drop-shadow(-20px -10px white)] (parsed as [drop-shadow(rgb(255, 255, 255) -20px -10px 0px)])
 PASS: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [none] at 0
-FAIL: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(rgba(0, 127, 0, 0.501961) 10px 5px 0px)] at 0.5, expected [drop-shadow(10px 5px #80C080)]
+FAIL: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(rgba(0, 127, 0, 0.501961) 10px 5px 0px)] at 0.5, expected [drop-shadow(10px 5px #80C080)] (parsed as [drop-shadow(rgb(128, 192, 128) 10px 5px 0px)])
 PASS: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(20px 10px green)] at 1
-FAIL: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(rgb(0, 192, 0) 30px 15px 0px)] at 1.5, expected [drop-shadow(30px 15px #004000)]
+FAIL: -webkit-filter from [none] to [drop-shadow(20px 10px green)] was [drop-shadow(rgb(0, 192, 0) 30px 15px 0px)] at 1.5, expected [drop-shadow(30px 15px #004000)] (parsed as [drop-shadow(rgb(0, 64, 0) 30px 15px 0px)])
 PASS: -webkit-filter from [drop-shadow(0px 0px 0px currentcolor)] to [drop-shadow(20px 10px green)] was [drop-shadow(-20px -10px white)] at -1
 PASS: -webkit-filter from [drop-shadow(0px 0px 0px currentcolor)] to [drop-shadow(20px 10px green)] was [drop-shadow(0px 0px 0px currentcolor)] at 0
 PASS: -webkit-filter from [drop-shadow(0px 0px 0px currentcolor)] to [drop-shadow(20px 10px green)] was [drop-shadow(10px 5px #80C080)] at 0.5
 PASS: -webkit-filter from [drop-shadow(0px 0px 0px currentcolor)] to [drop-shadow(20px 10px green)] was [drop-shadow(20px 10px green)] at 1
-FAIL: -webkit-filter from [drop-shadow(0px 0px 0px currentcolor)] to [drop-shadow(20px 10px green)] was [drop-shadow(rgb(0, 65, 0) 30px 15px 0px)] at 1.5, expected [drop-shadow(30px 15px #004000)]
+FAIL: -webkit-filter from [drop-shadow(0px 0px 0px currentcolor)] to [drop-shadow(20px 10px green)] was [drop-shadow(rgb(0, 65, 0) 30px 15px 0px)] at 1.5, expected [drop-shadow(30px 15px #004000)] (parsed as [drop-shadow(rgb(0, 64, 0) 30px 15px 0px)])
 PASS: -webkit-filter from [none] to [grayscale(1)] was [grayscale(0)] at -1
 PASS: -webkit-filter from [none] to [grayscale(1)] was [none] at 0
 PASS: -webkit-filter from [none] to [grayscale(1)] was [grayscale(0.5)] at 0.5