Support type selector for camel-cased SVG elements in HTML.

LayoutTests/svg/css/type-selector.svg

Index: LayoutTests/svg/css/type-selector.svg
diff --git a/LayoutTests/svg/css/type-selector.svg b/LayoutTests/svg/css/type-selector.svg
new file mode 100644
index 0000000000000000000000000000000000000000..56bd6743a3df39a937a7366bb56b9082f34e8f8b
--- /dev/null
+++ b/LayoutTests/svg/css/type-selector.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="600" height="500">
+<style>
+foreignObject { background-color: green; }
+foreignobject { background-color: red; }
+</style>
+<text y="20">There should be a PASS and a green square below.</text>
+<text y="40" id="result">FAIL</text>
+<foreignObject y="60" id="foreign" width="100" height="100" />
+<script>
+if (window.testRunner)
+    testRunner.dumpAsText();
+
+if (getComputedStyle(document.getElementById("foreign")).backgroundColor == "rgb(0, 128, 0)")
+    document.getElementById("result").firstChild.data = "PASS";
+</script>
+</svg>