Roll IDL files forward

core/xml/XMLHttpRequest.idl

Index: core/xml/XMLHttpRequest.idl
diff --git a/core/xml/XMLHttpRequest.idl b/core/xml/XMLHttpRequest.idl
index 2c4f1203fe96610ab96f3c18c7872145007c8ab5..ecee6f539992fc1725b7fa62d161f5b9e394609c 100644
--- a/core/xml/XMLHttpRequest.idl
+++ b/core/xml/XMLHttpRequest.idl
@@ -31,8 +31,7 @@ enum XMLHttpRequestResponseType {
     "arraybuffer",
     "blob",
     "document",
-//    FIXME: enable once support for json responseText is completed. (bug #73648)
-//    "json",
+    "json",
     "text"
 };
 
@@ -42,17 +41,7 @@ enum XMLHttpRequestResponseType {
     Constructor,
     ConstructorCallWith=ScriptExecutionContext,
     CustomConstructor(optional XMLHttpRequestOptions options)
-] interface XMLHttpRequest : EventTarget {
-    // From XMLHttpRequestEventTarget
-    // event handler attributes
-    attribute EventHandler onabort;
-    attribute EventHandler onerror;
-    attribute EventHandler onload;
-    attribute EventHandler onloadend;
-    attribute EventHandler onloadstart;
-    attribute EventHandler onprogress;
-    attribute EventHandler ontimeout;
-
+] interface XMLHttpRequest : XMLHttpRequestEventTarget {
     // event handler attributes
     attribute EventHandler onreadystatechange;