Revert of Remove enable/disable wheel gestures setting.

content/common/input/input_event_utils.h

Index: content/common/input/input_event_utils.h
diff --git a/content/common/input/input_event_utils.h b/content/common/input/input_event_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..c1a61ce2444a635711e593b8f27ab0f41f5e5c68
--- /dev/null
+++ b/content/common/input/input_event_utils.h
@@ -0,0 +1,17 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_INPUT_INPUT_EVENT_UTILS_H_
+#define CONTENT_RENDERER_INPUT_INPUT_EVENT_UTILS_H_
+
+#include "content/common/content_export.h"
+#include "content/public/common/content_switches.h"
+
+namespace content {
+
+CONTENT_EXPORT bool UseGestureBasedWheelScrolling();
+
+}; // namespace content
+
+#endif  // CONTENT_RENDERER_INPUT_INPUT_EVENT_UTILS_H_