Bug 1326686 - Only use the most recent refresh time as the start time of an AsyncScroll when the refresh driver is under test control. r=kip

MozReview-Commit-ID: FkyJfbaPPVl

--HG--
extra : rebase_source : 58ea615484a54b74b76f17e859136cf371b7c05f

layout/generic/nsGfxScrollFrame.cpp

@@ -2271,7 +2271,9 @@ ScrollFrameHelper::ScrollToWithOrigin(nsPoint aScrollPosition,
   }
 
   nsPresContext* presContext = mOuter->PresContext();
-  TimeStamp now = presContext->RefreshDriver()->MostRecentRefresh();
+  TimeStamp now = presContext->RefreshDriver()->IsTestControllingRefreshesEnabled()
+                ? presContext->RefreshDriver()->MostRecentRefresh()
+                : TimeStamp::Now();
   bool isSmoothScroll = (aMode == nsIScrollableFrame::SMOOTH) &&
                           IsSmoothScrollingEnabled();