Document attribute charset and its aliases to return UTF-8

LayoutTests/dom/xhtml/level3/core/documentgetinputencoding02.js

Index: LayoutTests/dom/xhtml/level3/core/documentgetinputencoding02.js
diff --git a/LayoutTests/dom/xhtml/level3/core/documentgetinputencoding02.js b/LayoutTests/dom/xhtml/level3/core/documentgetinputencoding02.js
index 7e31b6af714b86b4b975608ba6f2d6e32ba02f92..30635da6e089b2c71310e65f134ca5440c052be3 100644
--- a/LayoutTests/dom/xhtml/level3/core/documentgetinputencoding02.js
+++ b/LayoutTests/dom/xhtml/level3/core/documentgetinputencoding02.js
@@ -95,7 +95,7 @@ function documentgetinputencoding02() {
       }
       doc = load(docRef, "doc", "barfoo");
       domImpl = doc.implementation;
-docElem = doc.documentElement;
+      docElem = doc.documentElement;
 
       rootNS = docElem.namespaceURI;
 
@@ -104,7 +104,9 @@ docElem = doc.documentElement;
       newDoc = domImpl.createDocument(rootNS,rootName,nullDocType);
       encodingName = newDoc.inputEncoding;
 
-      assertNull("documentgetinputencoding02",encodingName);
+      assertEquals("documentgetinputencoding02", "utf-8", encodingName);

[philipj_slow, 2015/06/23 08:32:57]

I think that this should simply be |assertEquals("documentgetinputencoding02",
"UTF-8", encodingName)| as the single assertion.

[Habib Virji, 2015/06/23 13:58:09]

Done.

+      assertEquals("documentgetinputencoding02", "utf8", encodingName);
+      assertEquals("documentgetinputencoding02", "unicode-1-1-utf-8", encodingName);
 
 }