CSS Motion Path: animate offset-anchor and offset-position

third_party/WebKit/Source/core/css/resolver/AnimatedStyleBuilder.cpp

Index: third_party/WebKit/Source/core/css/resolver/AnimatedStyleBuilder.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/AnimatedStyleBuilder.cpp b/third_party/WebKit/Source/core/css/resolver/AnimatedStyleBuilder.cpp
index b8d25929a2e09b49eab5d6c717aa8f40095a14ae..3e9748ef317eee78d63a7149ec06371c8f8123b5 100644
--- a/third_party/WebKit/Source/core/css/resolver/AnimatedStyleBuilder.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/AnimatedStyleBuilder.cpp
@@ -641,6 +641,9 @@ void AnimatedStyleBuilder::applyProperty(CSSPropertyID property, StyleResolverSt
     case CSSPropertyTransformOrigin:
         style->setTransformOrigin(animatableValueToTransformOrigin(value, state));
         return;
+    case CSSPropertyOffsetAnchor:
+        style->setOffsetAnchor(animatableValueToLengthPoint(value, state));
+        return;
     case CSSPropertyOffsetDistance:
         style->setOffsetDistance(animatableValueToLength(value, state));
         return;
@@ -649,6 +652,9 @@ void AnimatedStyleBuilder::applyProperty(CSSPropertyID property, StyleResolverSt
             toAnimatableDoubleAndBool(value)->toDouble(),
             toAnimatableDoubleAndBool(value)->flag() ? OffsetRotationAuto : OffsetRotationFixed));
         return;
+    case CSSPropertyOffsetPosition:

[suzyh_UTC10 (ex-contributor), 2016/09/22 03:44:53]

Optional: Swap with CSSPropertyOffsetRotation to maintain local alph order. The
switch as a whole doesn't seem to follow this ordering, so not sure if it really
matters here.

[Eric Willigers, 2016/09/22 04:32:15]

Done.

+        style->setOffsetPosition(animatableValueToLengthPoint(value, state));
+        return;
     case CSSPropertyWebkitPerspectiveOriginX:
         style->setPerspectiveOriginX(animatableValueToLength(value, state));
         return;