--- a/gfx/layers/apz/util/TouchActionHelper.h
+++ b/gfx/layers/apz/util/TouchActionHelper.h
@@ -4,16 +4,17 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef __mozilla_layers_TouchActionHelper_h__
#define __mozilla_layers_TouchActionHelper_h__
#include "nsIFrame.h"
#include "nsIWidget.h"
#include "mozilla/layers/APZCTreeManager.h"
+#include "mozilla/layers/APZUtils.h"
namespace mozilla {
namespace widget {
/*
* Allow different platform widgets to access Content/DOM stuff.
*/
class TouchActionHelper