Cleanup checking for wheel gesture flags.

content/common/input/input_event_utils.cc

+// 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::kEnableWheelGestures);
+}
+
+}  // namespace content