SVG: no need to call |clearAnimatedType| at SVGAnimate{,Motion}Element dtor.

LayoutTests/svg/animations/animate-teardown.html

Index: LayoutTests/svg/animations/animate-teardown.html
diff --git a/LayoutTests/svg/animations/animate-teardown.html b/LayoutTests/svg/animations/animate-teardown.html
new file mode 100644
index 0000000000000000000000000000000000000000..2d05296e851a3b5c457136316fa8726326d20b86
--- /dev/null
+++ b/LayoutTests/svg/animations/animate-teardown.html
@@ -0,0 +1,14 @@
+<svg>

[rwlbuis, 2014/06/11 19:54:21]

Usually we have a more complete document element, i.e. specifying svg ns would
be nice.

[kouhei (in TOK), 2014/06/12 01:24:53]

This was meant to be html5 inline svg tag. Added html5 DOCTYPE instead.

+  <!-- animate element is destructed before rect elements -->
+  <animate xlink:href="#rect" attributeName="x" attributeType="XML" begin="0s" dur="10s" fill="freeze" from="0" to="100" />
+  <g id="usetarget">
+    <rect id="rect" x="10" y="10" width="10" height="10" fill="red"></rect>
+  </g>
+  <use xlink:href="#usetarget"></use>
+</svg>
+<p>Test pass if unloading this document does not fail ASSERTs on debug builds.</p>

[rwlbuis, 2014/06/11 19:54:21]

"Test passes"

[kouhei (in TOK), 2014/06/12 01:24:53]

Done.

+<script>
+// This test doesn't use js-test.js to avoid unexpected DOM references.
+if (window.testRunner)
+    testRunner.dumpAsText();
+</script>