Bug 865407 - Part 6: Expose VTTCue::Reset to Chrome JS. r=bz

content/media/TextTrackCue.h

@@ -307,6 +307,11 @@ public:
     mDisplayState = aDisplayState;
   }
 
+  bool HasBeenReset()
+  {
+    return mReset;
+  }
+
   // Helper functions for implementation.
   bool
   operator==(const TextTrackCue& rhs) const

dom/webidl/VTTCue.webidl

@@ -58,4 +58,6 @@ interface VTTCue : EventTarget {
 partial interface VTTCue {
   [ChromeOnly]
   attribute HTMLDivElement? displayState;
+  [ChromeOnly]
+  readonly attribute boolean hasBeenReset;
 };