Fix double composition bug in "points" SVG attribute animation

third_party/WebKit/LayoutTests/animations/svg-attribute-composition/svg-points-composition-expected.txt

Index: third_party/WebKit/LayoutTests/animations/svg-attribute-composition/svg-points-composition-expected.txt
diff --git a/third_party/WebKit/LayoutTests/animations/svg-attribute-composition/svg-points-composition-expected.txt b/third_party/WebKit/LayoutTests/animations/svg-attribute-composition/svg-points-composition-expected.txt
index a432e0b0aa91c5e55ab1e07dff8e00f33db4ba25..9f20a2db863dfce23ca61e13c7aa94672c56624b 100644
--- a/third_party/WebKit/LayoutTests/animations/svg-attribute-composition/svg-points-composition-expected.txt
+++ b/third_party/WebKit/LayoutTests/animations/svg-attribute-composition/svg-points-composition-expected.txt
@@ -13,24 +13,24 @@ PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 2
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10] at (1.4) is [120 120, -6 -6] 
 FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0) is [50 50, 50 50] assert_equals: expected "50 , 50 , 50 , 50 " but got "40 , 40 , 30 , 30 "
 FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0.2) is [50 50, 50 50] assert_equals: expected "50 , 50 , 50 , 50 " but got "40 , 40 , 30 , 30 "
-FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0.6) is [180 180, -20 -20, 100 100] assert_equals: expected "180 , 180 , - 20 , - 20 , 100 , 100 " but got "90 , 90 , - 10 , - 10 , 50 , 50 "
-FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (1) is [180 180, -20 -20, 100 100] assert_equals: expected "180 , 180 , - 20 , - 20 , 100 , 100 " but got "90 , 90 , - 10 , - 10 , 50 , 50 "
+PASS SMIL: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0.6) is [90 90, -10 -10, 50 50] 
+PASS SMIL: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (1) is [90 90, -10 -10, 50 50] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (-0.4) is [50 50, 50 50] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0) is [50 50, 50 50] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0.2) is [50 50, 50 50] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0.6) is [180 180, -20 -20, 100 100] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (1) is [180 180, -20 -20, 100 100] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (1.4) is [180 180, -20 -20, 100 100] 
-FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0) is [80 80] assert_equals: expected "80 , 80 " but got "40 , 40 "
-FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.2) is [80 80] assert_equals: expected "80 , 80 " but got "40 , 40 "
-FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.6) is [180 180, -20 -20] assert_equals: expected "180 , 180 , - 20 , - 20 " but got "90 , 90 , - 10 , - 10 "
-FAIL SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (1) is [180 180, -20 -20] assert_equals: expected "180 , 180 , - 20 , - 20 " but got "90 , 90 , - 10 , - 10 "
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (-0.4) is [80 80] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0) is [80 80] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.2) is [80 80] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.6) is [180 180, -20 -20] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (1) is [180 180, -20 -20] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (1.4) is [180 180, -20 -20] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (0.6) is [90 90, -10 -10, 50 50] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (1) is [90 90, -10 -10, 50 50] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to add [90 90, -10 -10, 50 50] at (1.4) is [90 90, -10 -10, 50 50] 
+PASS SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0) is [40 40] 
+PASS SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.2) is [40 40] 
+PASS SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.6) is [90 90, -10 -10] 
+PASS SMIL: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (1) is [90 90, -10 -10] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (-0.4) is [40 40] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0) is [40 40] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.2) is [40 40] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (0.6) is [90 90, -10 -10] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (1) is [90 90, -10 -10] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to add [90 90, -10 -10] at (1.4) is [90 90, -10 -10] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to replace [90 90, -10 -10] at (-0.4) is [34 34, 74 74] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to replace [90 90, -10 -10] at (0) is [50 50, 50 50] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to replace [90 90, -10 -10] at (0.2) is [58 58, 38 38] 
@@ -43,9 +43,9 @@ PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 2
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to replace [90 90, -10 -10, 50 50] at (0.6) is [90 90, -10 -10, 50 50] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to replace [90 90, -10 -10, 50 50] at (1) is [90 90, -10 -10, 50 50] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20] from add [40 40, 30 30] to replace [90 90, -10 -10, 50 50] at (1.4) is [90 90, -10 -10, 50 50] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (-0.4) is [80 80] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (0) is [80 80] 
-PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (0.2) is [80 80] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (-0.4) is [40 40] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (0) is [40 40] 
+PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (0.2) is [40 40] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (0.6) is [90 90, -10 -10] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (1) is [90 90, -10 -10] 
 PASS Web Animations: Interpolate attribute <points> with underlying [10 10, 20 20, 50 50] from add [40 40] to replace [90 90, -10 -10] at (1.4) is [90 90, -10 -10]