2 files changed, 8 insertions, 0 deletions
diff --git a/dom/events/Event.cpp b/dom/events/Event.cpp
index a85a0d66b..2af34136e 100644..100755
--- a/dom/events/Event.cpp
+++ b/dom/events/Event.cpp
@@ -32,6 +32,7 @@
 #include "nsJSEnvironment.h"
 #include "nsLayoutUtils.h"
 #include "nsPIWindowRoot.h"
+#include "mozilla/TimerClamping.h"
 #include "WorkerPrivate.h"
 
 namespace mozilla {
@@ -1085,6 +1086,12 @@ Event::DefaultPrevented(JSContext* aCx) const
 double
 Event::TimeStamp() const
 {
+  return TimerClamping::ReduceMsTimeValue(TimeStampImpl());
+}
+
+double
+Event::TimeStampImpl() const
+{
   if (!sReturnHighResTimeStamp) {
     return static_cast<double>(mEvent->mTime);
   }
diff --git a/dom/events/Event.h b/dom/events/Event.h
index 4ac6a68d5..c28226e8a 100644..100755
--- a/dom/events/Event.h
+++ b/dom/events/Event.h
@@ -62,6 +62,7 @@ private:
   void ConstructorInit(EventTarget* aOwner,
                        nsPresContext* aPresContext,
                        WidgetEvent* aEvent);
+  double TimeStampImpl() const;
 
 public:
   static Event* FromSupports(nsISupports* aSupports)