Bug 3256: Add ScrollIntoView() method to form frame objects.

git-svn-id: svn://10.0.0.236/trunk@43912 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/layout/forms/nsFileControlFrame.cpp

@@ -43,7 +43,7 @@
 #include "nsIDOMDocument.h"
 #include "nsDocument.h"
 #include "nsIDOMMouseListener.h"
-
+#include "nsIPresShell.h"
 
 
 static NS_DEFINE_IID(kCFileWidgetCID, NS_FILEWIDGET_CID);
@@ -188,6 +188,18 @@ nsFileControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
   }
 }
 
+void
+nsFileControlFrame::ScrollIntoView(nsIPresContext* aPresContext)
+{
+  if (aPresContext) {
+    nsCOMPtr<nsIPresShell> presShell;
+    aPresContext->GetShell(getter_AddRefs(presShell));
+    presShell->ScrollFrameIntoView(this,
+                   NS_PRESSHELL_SCROLL_ANYWHERE,NS_PRESSHELL_SCROLL_ANYWHERE);
+
+  }
+}
+
 /**
  * This is called when our browse button is clicked
  */