Port of Android platform gesture detection code to C++

ui/events/gesture_detection/gesture_config_helper.h

Index: ui/events/gesture_detection/gesture_config_helper.h
diff --git a/ui/events/gesture_detection/gesture_config_helper.h b/ui/events/gesture_detection/gesture_config_helper.h
new file mode 100644
index 0000000000000000000000000000000000000000..e37268db2fad0f16721e52bd8c6c467340b436cf
--- /dev/null
+++ b/ui/events/gesture_detection/gesture_config_helper.h
@@ -0,0 +1,30 @@
+// 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_GESTURE_DETECTION_GESTURE_CONFIG_HELPER_H_
+#define UI_EVENTS_GESTURE_DETECTION_GESTURE_CONFIG_HELPER_H_
+
+#include "ui/events/gesture_detection/gesture_detection_export.h"
+#include "ui/events/gesture_detection/gesture_detector.h"
+#include "ui/events/gesture_detection/gesture_provider.h"
+#include "ui/events/gesture_detection/scale_gesture_detector.h"
+#include "ui/events/gesture_detection/snap_scroll_controller.h"
+
+namespace ui {
+
+GESTURE_DETECTION_EXPORT GestureDetector::Config
+DefaultGestureDetectorConfig();
+
+GESTURE_DETECTION_EXPORT ScaleGestureDetector::Config
+DefaultScaleGestureDetectorConfig();
+
+GESTURE_DETECTION_EXPORT SnapScrollController::Config
+DefaultSnapScrollControllerConfig();
+
+GESTURE_DETECTION_EXPORT GestureProvider::Config
+DefaultGestureProviderConfig();
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_GESTURE_DETECTION_GESTURE_CONFIG_HELPER_H_