1 files changed, 4 insertions, 9 deletions
diff --git a/dom/workers/WorkerPrivate.h b/dom/workers/WorkerPrivate.h
index 465c0f9a3..28283bed7 100644
--- a/dom/workers/WorkerPrivate.h
+++ b/dom/workers/WorkerPrivate.h
@@ -216,8 +216,6 @@ private:
   WorkerType mWorkerType;
   TimeStamp mCreationTimeStamp;
   DOMHighResTimeStamp mCreationTimeHighRes;
-  TimeStamp mNowBaseTimeStamp;
-  DOMHighResTimeStamp mNowBaseTimeHighRes;
 
 protected:
   // The worker is owned by its thread, which is represented here.  This is set
@@ -579,14 +577,11 @@ public:
     return mCreationTimeHighRes;
   }
 
-  TimeStamp NowBaseTimeStamp() const
+  DOMHighResTimeStamp TimeStampToDOMHighRes(const TimeStamp& aTimeStamp) const
   {
-    return mNowBaseTimeStamp;
-  }
-
-  DOMHighResTimeStamp NowBaseTime() const
-  {
-    return mNowBaseTimeHighRes;
+    MOZ_ASSERT(!aTimeStamp.IsNull());
+    TimeDuration duration = aTimeStamp - mCreationTimeStamp;
+    return duration.ToMilliseconds();
   }
 
   nsIPrincipal*