Bug 971732. Hide the DeviceStorage interface object in cases when the corresponding navigator APIs are hidden. r=sicking

dom/tests/mochitest/general/test_interfaces.html

@@ -340,9 +340,9 @@ var interfaceNamesInGlobalScope =
 // IMPORTANT: Do not change this list without review from a DOM peer!
     "DeviceProximityEvent",
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    "DeviceStorage",
+    { name: "DeviceStorage", pref: "device.storage.enabled" },
 // IMPORTANT: Do not change this list without review from a DOM peer!
-    "DeviceStorageChangeEvent",
+    { name: "DeviceStorageChangeEvent", pref: "device.storage.enabled" },
 // IMPORTANT: Do not change this list without review from a DOM peer!
     "Document",
 // IMPORTANT: Do not change this list without review from a DOM peer!

dom/webidl/DeviceStorage.webidl

@@ -7,6 +7,7 @@ dictionary DeviceStorageEnumerationParameters {
   Date since;
 };
 
+[Pref="device.storage.enabled"]
 interface DeviceStorage : EventTarget {
   attribute EventHandler onchange;
 

dom/webidl/DeviceStorageChangeEvent.webidl

@@ -4,7 +4,8 @@
  * You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-[Constructor(DOMString type, optional DeviceStorageChangeEventInit eventInitDict)]
+[Constructor(DOMString type, optional DeviceStorageChangeEventInit eventInitDict),
+ Pref="device.storage.enabled"]
 interface DeviceStorageChangeEvent : Event
 {
   readonly attribute DOMString? path;