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

third_party/WebKit/LayoutTests/animations/interpolation/text-indent-interpolation-expected.txt

Index: third_party/WebKit/LayoutTests/animations/interpolation/text-indent-interpolation-expected.txt
diff --git a/third_party/WebKit/LayoutTests/animations/interpolation/text-indent-interpolation-expected.txt b/third_party/WebKit/LayoutTests/animations/interpolation/text-indent-interpolation-expected.txt
index a456cfeedd6daf3565fc218cafd5071f1d1f5c67..55038f1988686e6a086f755ce7f46af95a5f7dd7 100644
--- a/third_party/WebKit/LayoutTests/animations/interpolation/text-indent-interpolation-expected.txt
+++ b/third_party/WebKit/LayoutTests/animations/interpolation/text-indent-interpolation-expected.txt
@@ -1,11 +1,11 @@
 This is a testharness.js-based test.
 PASS This test uses interpolation-test.js. 
-PASS CSS Transitions: property <text-indent> from [] to [40px] at (-0.3) is [1px] 
-PASS CSS Transitions: property <text-indent> from [] to [40px] at (0) is [10px] 
-PASS CSS Transitions: property <text-indent> from [] to [40px] at (0.3) is [19px] 
-PASS CSS Transitions: property <text-indent> from [] to [40px] at (0.6) is [28px] 
-PASS CSS Transitions: property <text-indent> from [] to [40px] at (1) is [40px] 
-PASS CSS Transitions: property <text-indent> from [] to [40px] at (1.5) is [55px] 
+PASS CSS Transitions: property <text-indent> from neutral to [40px] at (-0.3) is [1px] 
+PASS CSS Transitions: property <text-indent> from neutral to [40px] at (0) is [10px] 
+PASS CSS Transitions: property <text-indent> from neutral to [40px] at (0.3) is [19px] 
+PASS CSS Transitions: property <text-indent> from neutral to [40px] at (0.6) is [28px] 
+PASS CSS Transitions: property <text-indent> from neutral to [40px] at (1) is [40px] 
+PASS CSS Transitions: property <text-indent> from neutral to [40px] at (1.5) is [55px] 
 PASS CSS Transitions: property <text-indent> from [initial] to [20px] at (-0.3) is [-6px] 
 PASS CSS Transitions: property <text-indent> from [initial] to [20px] at (0) is [0px] 
 PASS CSS Transitions: property <text-indent> from [initial] to [20px] at (0.3) is [6px] 
@@ -56,12 +56,12 @@ FAIL CSS Transitions: property <text-indent> from [0px] to [50px each-line hangi
 FAIL CSS Transitions: property <text-indent> from [0px] to [50px each-line hanging] at (0.6) is [30px each-line hanging] assert_equals: expected "50px each - line hanging " but got "30px each - line hanging "
 PASS CSS Transitions: property <text-indent> from [0px] to [50px each-line hanging] at (1) is [50px each-line hanging] 
 FAIL CSS Transitions: property <text-indent> from [0px] to [50px each-line hanging] at (1.5) is [75px each-line hanging] assert_equals: expected "50px each - line hanging " but got "75px each - line hanging "
-PASS CSS Animations: property <text-indent> from [] to [40px] at (-0.3) is [1px] 
-PASS CSS Animations: property <text-indent> from [] to [40px] at (0) is [10px] 
-PASS CSS Animations: property <text-indent> from [] to [40px] at (0.3) is [19px] 
-PASS CSS Animations: property <text-indent> from [] to [40px] at (0.6) is [28px] 
-PASS CSS Animations: property <text-indent> from [] to [40px] at (1) is [40px] 
-PASS CSS Animations: property <text-indent> from [] to [40px] at (1.5) is [55px] 
+PASS CSS Animations: property <text-indent> from neutral to [40px] at (-0.3) is [1px] 
+PASS CSS Animations: property <text-indent> from neutral to [40px] at (0) is [10px] 
+PASS CSS Animations: property <text-indent> from neutral to [40px] at (0.3) is [19px] 
+PASS CSS Animations: property <text-indent> from neutral to [40px] at (0.6) is [28px] 
+PASS CSS Animations: property <text-indent> from neutral to [40px] at (1) is [40px] 
+PASS CSS Animations: property <text-indent> from neutral to [40px] at (1.5) is [55px] 
 PASS CSS Animations: property <text-indent> from [initial] to [20px] at (-0.3) is [-6px] 
 PASS CSS Animations: property <text-indent> from [initial] to [20px] at (0) is [0px] 
 PASS CSS Animations: property <text-indent> from [initial] to [20px] at (0.3) is [6px] 
@@ -112,6 +112,12 @@ PASS CSS Animations: property <text-indent> from [0px] to [50px each-line hangin
 PASS CSS Animations: property <text-indent> from [0px] to [50px each-line hanging] at (0.6) is [50px each-line hanging] 
 PASS CSS Animations: property <text-indent> from [0px] to [50px each-line hanging] at (1) is [50px each-line hanging] 
 PASS CSS Animations: property <text-indent> from [0px] to [50px each-line hanging] at (1.5) is [50px each-line hanging] 
+PASS Web Animations: property <text-indent> from neutral to [40px] at (-0.3) is [1px] 
+PASS Web Animations: property <text-indent> from neutral to [40px] at (0) is [10px] 
+PASS Web Animations: property <text-indent> from neutral to [40px] at (0.3) is [19px] 
+PASS Web Animations: property <text-indent> from neutral to [40px] at (0.6) is [28px] 
+PASS Web Animations: property <text-indent> from neutral to [40px] at (1) is [40px] 
+PASS Web Animations: property <text-indent> from neutral to [40px] at (1.5) is [55px] 
 PASS Web Animations: property <text-indent> from [initial] to [20px] at (-0.3) is [-6px] 
 PASS Web Animations: property <text-indent> from [initial] to [20px] at (0) is [0px] 
 PASS Web Animations: property <text-indent> from [initial] to [20px] at (0.3) is [6px]