Use StylePath instead of (Path)StyleMotionPath

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

Index: third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
index 32263a850e08916e44a8ed3b4f47596c79d74379..e4418853ede5e90e5fd8f825c4df89bb9ac9f355 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp
@@ -975,9 +975,17 @@ RespectImageOrientationEnum StyleBuilderConverter::convertImageOrientation(Style
     return primitiveValue.getValueID() == CSSValueFromImage ? RespectImageOrientation : DoNotRespectImageOrientation;
 }
 
-PassRefPtr<StylePath> StyleBuilderConverter::convertPath(StyleResolverState&, CSSValue& value)
+PassRefPtr<StylePath> StyleBuilderConverter::convertPath(StyleResolverState&, const CSSValue& value)
 {
     return toCSSPathValue(value).cachedPath();
 }
 
+PassRefPtr<StylePath> StyleBuilderConverter::convertPathOrNone(StyleResolverState& state, const CSSValue& value)
+{
+    if (value.isPathValue())
+        return convertPath(state, value);
+    ASSERT(value.isPrimitiveValue() && toCSSPrimitiveValue(value).getValueID() == CSSValueNone);
+    return nullptr;
+}
+
 } // namespace blink