Bug 975042 - Enable JS Xray for the Date object. r=peterv

js/xpconnect/tests/unit/test_bug809652.js

@@ -37,17 +37,11 @@ function run_test() {
   checkThrows("DataView.prototype.getInt8.call(dv, 0);", sb);
 
   /* Now that Date is on Xrays, these should all throw. */
-  /* XXXbholley - We have to remove the old tests in this patch, because we're
-     removing the machinery that made them possible. But they won't fully behave
-     in an Xray-like way until the later patch where we turn on Xray-to-Date. So
-     we update the tests to the new behavior here but leave them commented out,
-     and uncomment them in the final patch.
   checkThrows("Date.prototype.getYear.call(d)", sb);
   checkThrows("Date.prototype.valueOf.call(d)", sb);
   checkThrows("d.valueOf()", sb);
   checkThrows("Date.prototype.toString.call(d)", sb);
   checkThrows("d.toString()", sb);
-  */
 
   /* Typed arrays. */
   function testForTypedArray(t) {

js/xpconnect/wrappers/XrayWrapper.cpp

@@ -42,7 +42,12 @@ using namespace XrayUtils;
 static bool
 IsJSXraySupported(JSProtoKey key)
 {
-    return false;
+    switch (key) {
+      case JSProto_Date:
+        return true;
+      default:
+        return false;
+    }
 }
 
 XrayType