Bug 475197. box-shadow should work on file input controls. r+sr=roc

layout/forms/nsFileControlFrame.cpp

@@ -548,6 +548,13 @@ nsFileControlFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                      const nsRect&           aDirtyRect,
                                      const nsDisplayListSet& aLists)
 {
+  // box-shadow
+  if (GetStyleBorder()->mBoxShadow) {
+    nsresult rv = aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
+        nsDisplayBoxShadow(this));
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
   // Our background is inherited to the text input, and we don't really want to
   // paint it or out padding and borders (which we never have anyway, per
   // styles in forms.css) -- doing it just makes us look ugly in some cases and