Backed out changeset 9b7df7c7adc1 (bug 1224892) for m13 test failures

--HG--
extra : rebase_source : 267dd2cda5873c38b6ebb9b53075675bbae9969c

dom/webidl/Navigator.webidl

@@ -190,7 +190,7 @@ Navigator implements NavigatorMobileId;
 
 // nsIDOMNavigator
 partial interface Navigator {
-  [Throws, Constant, Cached]
+  [Throws]
   readonly attribute DOMString oscpu;
   // WebKit/Blink support this; Trident/Presto do not.
   readonly attribute DOMString vendor;
@@ -200,7 +200,7 @@ partial interface Navigator {
   readonly attribute DOMString productSub;
   // WebKit/Blink/Trident/Presto support this.
   readonly attribute boolean cookieEnabled;
-  [Throws, Constant, Cached]
+  [Throws]
   readonly attribute DOMString buildID;
   [Throws, CheckAnyPermissions="power", UnsafeInPrerendering]
   readonly attribute MozPowerManager mozPower;