Revert of Remove enable/disable wheel gestures setting.

content/common/input/input_event_utils.cc

Index: content/common/input/input_event_utils.cc
diff --git a/content/common/input/input_event_utils.cc b/content/common/input/input_event_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..31669ed3ca3b576e0771f99689331596fb0e990e
--- /dev/null
+++ b/content/common/input/input_event_utils.cc
@@ -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.
+
+#include "content/common/input/input_event_utils.h"
+
+#include "base/command_line.h"
+#include "content/public/common/content_switches.h"
+
+namespace content {
+
+bool UseGestureBasedWheelScrolling() {
+  base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
+  return !cmd->HasSwitch(switches::kDisableWheelGestures);
+}
+
+}  // namespace content