[SVG] Regression: SVG syncbase animation no longer supports cyclic references

LayoutTests/svg/animations/cyclic-syncbase-expected.txt

Index: LayoutTests/svg/animations/cyclic-syncbase-expected.txt
diff --git a/LayoutTests/svg/animations/cyclic-syncbase-expected.txt b/LayoutTests/svg/animations/cyclic-syncbase-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..86151ab9d4fd8e27eec9da4c71348c08aa8ed475
--- /dev/null
+++ b/LayoutTests/svg/animations/cyclic-syncbase-expected.txt
@@ -0,0 +1,22 @@
+SVG 1.1 dynamic animation tests
+
+
+Test cyclic for svg animations for syncbases
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS rootSVGElement.getBBox().x is 100
+PASS rootSVGElement.getBBox().y is 0
+PASS rootSVGElement.getBBox().x is 0
+PASS rootSVGElement.getBBox().y is 100
+PASS rootSVGElement.getBBox().x is 100
+PASS rootSVGElement.getBBox().y is 0
+PASS rootSVGElement.getBBox().x is 0
+PASS rootSVGElement.getBBox().y is 100
+PASS rootSVGElement.getBBox().x is 100
+PASS rootSVGElement.getBBox().y is 0
+PASS successfullyParsed is true
+
+TEST COMPLETE
+