Fix slop region boundary handling.

ui/events/gestures/unified_gesture_detector_enabled.h

Index: ui/events/gestures/unified_gesture_detector_enabled.h
diff --git a/ui/events/gestures/unified_gesture_detector_enabled.h b/ui/events/gestures/unified_gesture_detector_enabled.h
new file mode 100644
index 0000000000000000000000000000000000000000..18fdc26d8acce43741bc54aea0e59b3491696171
--- /dev/null
+++ b/ui/events/gestures/unified_gesture_detector_enabled.h
@@ -0,0 +1,17 @@
+// Copyright 2014 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 UI_EVENTS_GESTURES_UNIFIED_GESTURE_DETECTOR_ENABLED_H_
+#define UI_EVENTS_GESTURES_UNIFIED_GESTURE_DETECTOR_ENABLED_H_
+
+#include "ui/events/events_export.h"
+
+namespace ui {
+
+// Returns true iff the unified gesture detector is enabled for Aura.
+EVENTS_EXPORT bool IsUnifiedGestureDetectorEnabled();
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_GESTURES_UNIFIED_GESTURE_DETECTOR_ENABLED_H_