Use neutralKeyframe sentinal instead of '' for interpolation-test.js tests

third_party/WebKit/LayoutTests/animations/interpolation/svg-stroke-dasharray-interpolation-expected.txt

Index: third_party/WebKit/LayoutTests/animations/interpolation/svg-stroke-dasharray-interpolation-expected.txt
diff --git a/third_party/WebKit/LayoutTests/animations/interpolation/svg-stroke-dasharray-interpolation-expected.txt b/third_party/WebKit/LayoutTests/animations/interpolation/svg-stroke-dasharray-interpolation-expected.txt
index a44aa91534bb46a8abe60bac0d935f3c209a39eb..7024471f05860ef9c20e08c902e6299f98ab3b60 100644
--- a/third_party/WebKit/LayoutTests/animations/interpolation/svg-stroke-dasharray-interpolation-expected.txt
+++ b/third_party/WebKit/LayoutTests/animations/interpolation/svg-stroke-dasharray-interpolation-expected.txt
@@ -1,15 +1,15 @@
 This is a testharness.js-based test.
 PASS This test uses interpolation-test.js. 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (-0.6) is [4px, 36px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (-0.4) is [6px, 34px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (-0.2) is [8px, 32px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (0) is [10px, 30px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (0.2) is [12px, 28px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (0.4) is [14px, 26px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (0.6) is [16px, 24px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (0.8) is [18px, 22px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (1) is [20px, 20px] 
-PASS CSS Transitions: property <stroke-dasharray> from [] to [20 20] at (1.2) is [22px, 18px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (-0.6) is [4px, 36px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (-0.4) is [6px, 34px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (-0.2) is [8px, 32px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (0) is [10px, 30px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (0.2) is [12px, 28px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (0.4) is [14px, 26px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (0.6) is [16px, 24px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (0.8) is [18px, 22px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (1) is [20px, 20px] 
+PASS CSS Transitions: property <stroke-dasharray> from neutral to [20 20] at (1.2) is [22px, 18px] 
 FAIL CSS Transitions: property <stroke-dasharray> from [initial] to [20 20] at (-0.3) is [0px, 0px] assert_equals: expected "20px , 20px " but got "0px , 0px "
 FAIL CSS Transitions: property <stroke-dasharray> from [initial] to [20 20] at (0) is [none] assert_equals: expected "20px , 20px " but got "none "
 FAIL CSS Transitions: property <stroke-dasharray> from [initial] to [20 20] at (0.3) is [6px, 6px] assert_equals: expected "20px , 20px " but got "6px , 6px "
@@ -155,16 +155,16 @@ PASS CSS Transitions: property <stroke-dasharray> from [10em 20px 30em 40px 50em
 PASS CSS Transitions: property <stroke-dasharray> from [10em 20px 30em 40px 50em 60px] to [100em 200px 300em 400px] at (0.8) is [1312px, 164px, 3936px, 328px, 1440px, 172px, 3872px, 324px, 1376px, 168px, 4000px, 332px] 
 PASS CSS Transitions: property <stroke-dasharray> from [10em 20px 30em 40px 50em 60px] to [100em 200px 300em 400px] at (1) is [1600px, 200px, 4800px, 400px] 
 PASS CSS Transitions: property <stroke-dasharray> from [10em 20px 30em 40px 50em 60px] to [100em 200px 300em 400px] at (1.2) is [1888px, 236px, 5664px, 472px, 1760px, 228px, 5728px, 476px, 1824px, 232px, 5600px, 468px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (-0.6) is [4px, 36px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (-0.4) is [6px, 34px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (-0.2) is [8px, 32px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (0) is [10px, 30px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (0.2) is [12px, 28px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (0.4) is [14px, 26px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (0.6) is [16px, 24px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (0.8) is [18px, 22px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (1) is [20px, 20px] 
-PASS CSS Animations: property <stroke-dasharray> from [] to [20 20] at (1.2) is [22px, 18px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (-0.6) is [4px, 36px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (-0.4) is [6px, 34px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (-0.2) is [8px, 32px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (0) is [10px, 30px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (0.2) is [12px, 28px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (0.4) is [14px, 26px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (0.6) is [16px, 24px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (0.8) is [18px, 22px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (1) is [20px, 20px] 
+PASS CSS Animations: property <stroke-dasharray> from neutral to [20 20] at (1.2) is [22px, 18px] 
 PASS CSS Animations: property <stroke-dasharray> from [initial] to [20 20] at (-0.3) is [none] 
 PASS CSS Animations: property <stroke-dasharray> from [initial] to [20 20] at (0) is [none] 
 PASS CSS Animations: property <stroke-dasharray> from [initial] to [20 20] at (0.3) is [none] 
@@ -310,6 +310,16 @@ PASS CSS Animations: property <stroke-dasharray> from [10em 20px 30em 40px 50em
 PASS CSS Animations: property <stroke-dasharray> from [10em 20px 30em 40px 50em 60px] to [100em 200px 300em 400px] at (0.8) is [1312px, 164px, 3936px, 328px, 1440px, 172px, 3872px, 324px, 1376px, 168px, 4000px, 332px] 
 PASS CSS Animations: property <stroke-dasharray> from [10em 20px 30em 40px 50em 60px] to [100em 200px 300em 400px] at (1) is [1600px, 200px, 4800px, 400px] 
 PASS CSS Animations: property <stroke-dasharray> from [10em 20px 30em 40px 50em 60px] to [100em 200px 300em 400px] at (1.2) is [1888px, 236px, 5664px, 472px, 1760px, 228px, 5728px, 476px, 1824px, 232px, 5600px, 468px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (-0.6) is [4px, 36px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (-0.4) is [6px, 34px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (-0.2) is [8px, 32px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (0) is [10px, 30px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (0.2) is [12px, 28px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (0.4) is [14px, 26px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (0.6) is [16px, 24px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (0.8) is [18px, 22px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (1) is [20px, 20px] 
+PASS Web Animations: property <stroke-dasharray> from neutral to [20 20] at (1.2) is [22px, 18px] 
 PASS Web Animations: property <stroke-dasharray> from [initial] to [20 20] at (-0.3) is [none] 
 PASS Web Animations: property <stroke-dasharray> from [initial] to [20 20] at (0) is [none] 
 PASS Web Animations: property <stroke-dasharray> from [initial] to [20 20] at (0.3) is [none]