Add additive animation support for CSS property clip

third_party/WebKit/LayoutTests/animations/interpolation/border-image-width-interpolation-expected.txt

Index: third_party/WebKit/LayoutTests/animations/interpolation/border-image-width-interpolation-expected.txt
diff --git a/third_party/WebKit/LayoutTests/animations/interpolation/border-image-width-interpolation-expected.txt b/third_party/WebKit/LayoutTests/animations/interpolation/border-image-width-interpolation-expected.txt
index 97b913bfb6e4ae4c28a56b635418996d80ab3672..dfe4ade2c71f51651084121ffb2da65b1080f5e0 100644
--- a/third_party/WebKit/LayoutTests/animations/interpolation/border-image-width-interpolation-expected.txt
+++ b/third_party/WebKit/LayoutTests/animations/interpolation/border-image-width-interpolation-expected.txt
@@ -8,14 +8,13 @@ PASS CSS Transitions: property <border-image-width> from [] to [20px] at (1) is
 PASS CSS Transitions: property <border-image-width> from [] to [20px] at (1.5) is [25px] 
 PASS CSS Transitions: property <border-image-width> from [] to [20px] at (5) is [60px] 
 PASS CSS Transitions: property <border-image-width> from [] to [20px] at (10) is [110px] 
-PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (-0.3) is [1] 
-PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (0) is [1] 
-PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (0.3) is [1] 
+PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (-0.3) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (0) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (0.3) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (0.5) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (0.6) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (1) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (1.5) is [20px] 
-PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (5) is [20px] 
-PASS CSS Transitions: property <border-image-width> from [initial] to [20px] at (10) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at (-0.3) is [124px] 
 PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at (0) is [100px] 
 PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at (0.3) is [76px] 
@@ -24,14 +23,13 @@ PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at
 PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at (1.5) is [0px] 
 PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at (5) is [0px] 
 PASS CSS Transitions: property <border-image-width> from [inherit] to [20px] at (10) is [0px] 
-PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (-0.3) is [1] 
-PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (0) is [1] 
-PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (0.3) is [1] 
+PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (-0.3) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (0) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (0.3) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (0.5) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (0.6) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (1) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (1.5) is [20px] 
-PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (5) is [20px] 
-PASS CSS Transitions: property <border-image-width> from [unset] to [20px] at (10) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [0px] to [20px] at (-0.3) is [0px] 
 PASS CSS Transitions: property <border-image-width> from [0px] to [20px] at (0) is [0px] 
 PASS CSS Transitions: property <border-image-width> from [0px] to [20px] at (0.3) is [6px] 
@@ -76,27 +74,31 @@ FAIL CSS Transitions: property <border-image-width> from [10px] to [20%] at (0.3
 FAIL CSS Transitions: property <border-image-width> from [10px] to [20%] at (0.6) is [calc(4px + 12%)] assert_equals: expected "16px " but got "calc ( 4px + 12 % ) "
 PASS CSS Transitions: property <border-image-width> from [10px] to [20%] at (1) is [20%] 
 FAIL CSS Transitions: property <border-image-width> from [10px] to [20%] at (1.5) is [calc(-5px + 30%)] assert_equals: expected "25px " but got "calc ( - 5px + 30 % ) "
-PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (-0.3) is [10px] 
-PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (0) is [10px] 
-PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (0.3) is [10px] 
+PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (-0.3) is [20] 
+PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (0) is [20] 
+PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (0.3) is [20] 
+PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (0.5) is [20] 
 PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (0.6) is [20] 
 PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (1) is [20] 
 PASS CSS Transitions: property <border-image-width> from [10px] to [20] at (1.5) is [20] 
-PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (-0.3) is [10] 
-PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (0) is [10] 
-PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (0.3) is [10] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (-0.3) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (0) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (0.3) is [20px] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (0.5) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (0.6) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (1) is [20px] 
 PASS CSS Transitions: property <border-image-width> from [10] to [20px] at (1.5) is [20px] 
-PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (-0.3) is [10%] 
-PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (0) is [10%] 
-PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (0.3) is [10%] 
+PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (-0.3) is [20] 
+PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (0) is [20] 
+PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (0.3) is [20] 
+PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (0.5) is [20] 
 PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (0.6) is [20] 
 PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (1) is [20] 
 PASS CSS Transitions: property <border-image-width> from [10%] to [20] at (1.5) is [20] 
-PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (-0.3) is [10] 
-PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (0) is [10] 
-PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (0.3) is [10] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (-0.3) is [20%] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (0) is [20%] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (0.3) is [20%] 
+PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (0.5) is [20%] 
 PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (0.6) is [20%] 
 PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (1) is [20%] 
 PASS CSS Transitions: property <border-image-width> from [10] to [20%] at (1.5) is [20%] 
@@ -111,11 +113,10 @@ PASS CSS Animations: property <border-image-width> from [] to [20px] at (10) is
 PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (-0.3) is [1] 
 PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (0) is [1] 
 PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (0.3) is [1] 
+PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (0.5) is [20px] 
 PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (0.6) is [20px] 
 PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (1) is [20px] 
 PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (1.5) is [20px] 
-PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (5) is [20px] 
-PASS CSS Animations: property <border-image-width> from [initial] to [20px] at (10) is [20px] 
 PASS CSS Animations: property <border-image-width> from [inherit] to [20px] at (-0.3) is [124px] 
 PASS CSS Animations: property <border-image-width> from [inherit] to [20px] at (0) is [100px] 
 PASS CSS Animations: property <border-image-width> from [inherit] to [20px] at (0.3) is [76px] 
@@ -127,11 +128,10 @@ PASS CSS Animations: property <border-image-width> from [inherit] to [20px] at (
 PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (-0.3) is [1] 
 PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (0) is [1] 
 PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (0.3) is [1] 
+PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (0.5) is [20px] 
 PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (0.6) is [20px] 
 PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (1) is [20px] 
 PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (1.5) is [20px] 
-PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (5) is [20px] 
-PASS CSS Animations: property <border-image-width> from [unset] to [20px] at (10) is [20px] 
 PASS CSS Animations: property <border-image-width> from [0px] to [20px] at (-0.3) is [0px] 
 PASS CSS Animations: property <border-image-width> from [0px] to [20px] at (0) is [0px] 
 PASS CSS Animations: property <border-image-width> from [0px] to [20px] at (0.3) is [6px] 
@@ -179,35 +179,38 @@ FAIL CSS Animations: property <border-image-width> from [10px] to [20%] at (1.5)
 PASS CSS Animations: property <border-image-width> from [10px] to [20] at (-0.3) is [10px] 
 PASS CSS Animations: property <border-image-width> from [10px] to [20] at (0) is [10px] 
 PASS CSS Animations: property <border-image-width> from [10px] to [20] at (0.3) is [10px] 
+PASS CSS Animations: property <border-image-width> from [10px] to [20] at (0.5) is [20] 
 PASS CSS Animations: property <border-image-width> from [10px] to [20] at (0.6) is [20] 
 PASS CSS Animations: property <border-image-width> from [10px] to [20] at (1) is [20] 
 PASS CSS Animations: property <border-image-width> from [10px] to [20] at (1.5) is [20] 
 PASS CSS Animations: property <border-image-width> from [10] to [20px] at (-0.3) is [10] 
 PASS CSS Animations: property <border-image-width> from [10] to [20px] at (0) is [10] 
 PASS CSS Animations: property <border-image-width> from [10] to [20px] at (0.3) is [10] 
+PASS CSS Animations: property <border-image-width> from [10] to [20px] at (0.5) is [20px] 
 PASS CSS Animations: property <border-image-width> from [10] to [20px] at (0.6) is [20px] 
 PASS CSS Animations: property <border-image-width> from [10] to [20px] at (1) is [20px] 
 PASS CSS Animations: property <border-image-width> from [10] to [20px] at (1.5) is [20px] 
 PASS CSS Animations: property <border-image-width> from [10%] to [20] at (-0.3) is [10%] 
 PASS CSS Animations: property <border-image-width> from [10%] to [20] at (0) is [10%] 
 PASS CSS Animations: property <border-image-width> from [10%] to [20] at (0.3) is [10%] 
+PASS CSS Animations: property <border-image-width> from [10%] to [20] at (0.5) is [20] 
 PASS CSS Animations: property <border-image-width> from [10%] to [20] at (0.6) is [20] 
 PASS CSS Animations: property <border-image-width> from [10%] to [20] at (1) is [20] 
 PASS CSS Animations: property <border-image-width> from [10%] to [20] at (1.5) is [20] 
 PASS CSS Animations: property <border-image-width> from [10] to [20%] at (-0.3) is [10] 
 PASS CSS Animations: property <border-image-width> from [10] to [20%] at (0) is [10] 
 PASS CSS Animations: property <border-image-width> from [10] to [20%] at (0.3) is [10] 
+PASS CSS Animations: property <border-image-width> from [10] to [20%] at (0.5) is [20%] 
 PASS CSS Animations: property <border-image-width> from [10] to [20%] at (0.6) is [20%] 
 PASS CSS Animations: property <border-image-width> from [10] to [20%] at (1) is [20%] 
 PASS CSS Animations: property <border-image-width> from [10] to [20%] at (1.5) is [20%] 
 PASS Web Animations: property <border-image-width> from [initial] to [20px] at (-0.3) is [1] 
 PASS Web Animations: property <border-image-width> from [initial] to [20px] at (0) is [1] 
 PASS Web Animations: property <border-image-width> from [initial] to [20px] at (0.3) is [1] 
+PASS Web Animations: property <border-image-width> from [initial] to [20px] at (0.5) is [20px] 
 PASS Web Animations: property <border-image-width> from [initial] to [20px] at (0.6) is [20px] 
 PASS Web Animations: property <border-image-width> from [initial] to [20px] at (1) is [20px] 
 PASS Web Animations: property <border-image-width> from [initial] to [20px] at (1.5) is [20px] 
-PASS Web Animations: property <border-image-width> from [initial] to [20px] at (5) is [20px] 
-PASS Web Animations: property <border-image-width> from [initial] to [20px] at (10) is [20px] 
 PASS Web Animations: property <border-image-width> from [inherit] to [20px] at (-0.3) is [124px] 
 PASS Web Animations: property <border-image-width> from [inherit] to [20px] at (0) is [100px] 
 PASS Web Animations: property <border-image-width> from [inherit] to [20px] at (0.3) is [76px] 
@@ -219,11 +222,10 @@ PASS Web Animations: property <border-image-width> from [inherit] to [20px] at (
 PASS Web Animations: property <border-image-width> from [unset] to [20px] at (-0.3) is [1] 
 PASS Web Animations: property <border-image-width> from [unset] to [20px] at (0) is [1] 
 PASS Web Animations: property <border-image-width> from [unset] to [20px] at (0.3) is [1] 
+PASS Web Animations: property <border-image-width> from [unset] to [20px] at (0.5) is [20px] 
 PASS Web Animations: property <border-image-width> from [unset] to [20px] at (0.6) is [20px] 
 PASS Web Animations: property <border-image-width> from [unset] to [20px] at (1) is [20px] 
 PASS Web Animations: property <border-image-width> from [unset] to [20px] at (1.5) is [20px] 
-PASS Web Animations: property <border-image-width> from [unset] to [20px] at (5) is [20px] 
-PASS Web Animations: property <border-image-width> from [unset] to [20px] at (10) is [20px] 
 PASS Web Animations: property <border-image-width> from [0px] to [20px] at (-0.3) is [0px] 
 PASS Web Animations: property <border-image-width> from [0px] to [20px] at (0) is [0px] 
 PASS Web Animations: property <border-image-width> from [0px] to [20px] at (0.3) is [6px] 
@@ -271,24 +273,28 @@ FAIL Web Animations: property <border-image-width> from [10px] to [20%] at (1.5)
 PASS Web Animations: property <border-image-width> from [10px] to [20] at (-0.3) is [10px] 
 PASS Web Animations: property <border-image-width> from [10px] to [20] at (0) is [10px] 
 PASS Web Animations: property <border-image-width> from [10px] to [20] at (0.3) is [10px] 
+PASS Web Animations: property <border-image-width> from [10px] to [20] at (0.5) is [20] 
 PASS Web Animations: property <border-image-width> from [10px] to [20] at (0.6) is [20] 
 PASS Web Animations: property <border-image-width> from [10px] to [20] at (1) is [20] 
 PASS Web Animations: property <border-image-width> from [10px] to [20] at (1.5) is [20] 
 PASS Web Animations: property <border-image-width> from [10] to [20px] at (-0.3) is [10] 
 PASS Web Animations: property <border-image-width> from [10] to [20px] at (0) is [10] 
 PASS Web Animations: property <border-image-width> from [10] to [20px] at (0.3) is [10] 
+PASS Web Animations: property <border-image-width> from [10] to [20px] at (0.5) is [20px] 
 PASS Web Animations: property <border-image-width> from [10] to [20px] at (0.6) is [20px] 
 PASS Web Animations: property <border-image-width> from [10] to [20px] at (1) is [20px] 
 PASS Web Animations: property <border-image-width> from [10] to [20px] at (1.5) is [20px] 
 PASS Web Animations: property <border-image-width> from [10%] to [20] at (-0.3) is [10%] 
 PASS Web Animations: property <border-image-width> from [10%] to [20] at (0) is [10%] 
 PASS Web Animations: property <border-image-width> from [10%] to [20] at (0.3) is [10%] 
+PASS Web Animations: property <border-image-width> from [10%] to [20] at (0.5) is [20] 
 PASS Web Animations: property <border-image-width> from [10%] to [20] at (0.6) is [20] 
 PASS Web Animations: property <border-image-width> from [10%] to [20] at (1) is [20] 
 PASS Web Animations: property <border-image-width> from [10%] to [20] at (1.5) is [20] 
 PASS Web Animations: property <border-image-width> from [10] to [20%] at (-0.3) is [10] 
 PASS Web Animations: property <border-image-width> from [10] to [20%] at (0) is [10] 
 PASS Web Animations: property <border-image-width> from [10] to [20%] at (0.3) is [10] 
+PASS Web Animations: property <border-image-width> from [10] to [20%] at (0.5) is [20%] 
 PASS Web Animations: property <border-image-width> from [10] to [20%] at (0.6) is [20%] 
 PASS Web Animations: property <border-image-width> from [10] to [20%] at (1) is [20%] 
 PASS Web Animations: property <border-image-width> from [10] to [20%] at (1.5) is [20%]