When scrolling to form controls on focus, make sure to flush out pending

reflows first.  Bug 245133, r+sr=jst


git-svn-id: svn://10.0.0.236/trunk@157195 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/layout/base/nsPresShell.cpp

@@ -4319,6 +4319,9 @@ PresShell::ScrollFrameIntoView(nsIFrame *aFrame,
     }
   }
 
+  // Flush out pending reflows to make sure we scroll to the right place
+  mDocument->FlushPendingNotifications(Flush_OnlyReflow);
+  
   // This is a two-step process.
   // Step 1: Find the bounds of the rect we want to scroll into view.  For
   //         example, for an inline frame we may want to scroll in the whole