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

LayoutTests/fast/svg/foreign-object-case-sensitivity-expected.txt

+Testing case-sensitivity for the svg:foreignObject tag in html.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Node.localName is normalized to camel-case inside <svg>, lower-case otherwise.
+
+PASS fo1.localName is "foreignobject"
+PASS fo2.localName is "foreignobject"
+PASS fo3.localName is "foreignObject"
+PASS fo4.localName is "foreignObject"
+
+Selectors API queries match case-insensitively for html, case-sensitively for svg.
+
+PASS queryAllLower.length is 2
+PASS queryAllLower[0].id is "fo1"
+PASS queryAllLower[1].id is "fo2"
+PASS queryAllCamel.length is 4
+PASS queryAllCamel[0].id is "fo1"
+PASS queryAllCamel[1].id is "fo2"
+PASS queryAllCamel[2].id is "fo3"
+PASS queryAllCamel[3].id is "fo4"
+
+getElementsByTagName matches case-insensitively for html, case-sensitively for svg.
+
+PASS byTagNameLower.length is 2
+PASS byTagNameLower[0].id is "fo1"
+PASS byTagNameLower[1].id is "fo2"
+PASS byTagNameCamel.length is 4
+PASS byTagNameCamel[0].id is "fo1"
+PASS byTagNameCamel[1].id is "fo2"
+PASS byTagNameCamel[2].id is "fo3"
+PASS byTagNameCamel[3].id is "fo4"
+
+Style rule matches case-insensitively for html, case-sensitively for svg.
+
+PASS getComputedStyle(fo1).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(fo1).fontWeight is "bold"
+PASS getComputedStyle(fo2).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(fo2).fontWeight is "bold"
+PASS getComputedStyle(fo3).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(fo3).fontWeight is "normal"
+PASS getComputedStyle(fo4).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(fo4).fontWeight is "normal"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+This text should be green and bold
+This text should be green and bold
+This text should be green, not bold
+This text should be green, not bold