Remove the Document.charset setter (making it readonly)

LayoutTests/fast/dom/Document/document-charset.html

Index: LayoutTests/fast/dom/Document/document-charset.html
diff --git a/LayoutTests/fast/dom/Document/document-charset.html b/LayoutTests/fast/dom/Document/document-charset.html
index fffc724ea39d86330c8e810ead12a36078f8b93a..1594696cec89c1833103bedc6097a81f01c19cd2 100644
--- a/LayoutTests/fast/dom/Document/document-charset.html
+++ b/LayoutTests/fast/dom/Document/document-charset.html
@@ -15,28 +15,12 @@ document.write("<p>&nbsp;document.defaultCharset: " + (document.defaultCharset ?
 document.write("<p>&nbsp;document.characterSet: " + document.characterSet + "</p>"); // Firefox
 document.write("<p>&nbsp;document.inputEncoding: " + document.inputEncoding + "</p>"); // DOM3
 
-document.write("<p>Setting charset to UTF-8...</p>");
-try {
-    document.charset = "utf-8";
-    document.write("<p>&nbsp;document.charset: " + document.charset + "</p>");
-    document.write("<p>&nbsp;document.defaultCharset: " + (document.defaultCharset ? "defined" : "undefined") + "</p>");
-    document.write("<p>&nbsp;document.characterSet: " + document.characterSet + "</p>");
-    document.write("<p>&nbsp;document.inputEncoding: " + document.inputEncoding + "</p>");
-} catch (ex) {
-    document.write("<p>Failure</p>");
-}
-
-// throws an exception in Firefox, but JavaScriptCore seems to silently ignore assignment to read-only properties
-document.write("<p>Setting characterSet to KOI8-R (expected to fail, matching Firefox)...</p>");
-try {
-    document.characterSet = "KOI8-R";
-    document.write("<p>&nbsp;document.charset: " + document.charset + "</p>");
-    document.write("<p>&nbsp;document.defaultCharset: " + (document.defaultCharset ? "defined" : "undefined") + "</p>");
-    document.write("<p>&nbsp;document.characterSet: " + document.characterSet + "</p>");
-    document.write("<p>&nbsp;document.inputEncoding: " + document.inputEncoding + "</p>");
-} catch (ex) {
-    document.write("<p>Failure (expected)</p>");
-}
+document.write("<p>Setting charset to UTF-8... (expected to have no effect)</p>");
+document.charset = "utf-8";
+document.write("<p>&nbsp;document.charset: " + document.charset + "</p>");
+document.write("<p>&nbsp;document.defaultCharset: " + (document.defaultCharset ? "defined" : "undefined") + "</p>");
+document.write("<p>&nbsp;document.characterSet: " + document.characterSet + "</p>");
+document.write("<p>&nbsp;document.inputEncoding: " + document.inputEncoding + "</p>");
 
 </script>
 </body>