Backed out changeset 9dadd58e3317 (bug 617339) to fix test orange.

--HG--
extra : rebase_source : 0f9e38450b8feb3f282e2ee73aa9482cde59f7f9

chrome/src/nsChromeProtocolHandler.cpp

@@ -285,8 +285,6 @@ nsChromeProtocolHandler::NewChannel(nsIURI* aURI,
     }
 #endif
 
-    result->SetContentCharset(NS_LITERAL_CSTRING("UTF-8"));
-
     *aResult = result;
     NS_ADDREF(*aResult);
     return NS_OK;