gesture recognizer: Remove the touch-event queue.

content/browser/renderer_host/ui_events_helper.h

+// Copyright (c) 2012 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_BROWSER_RENDERER_HOST_UI_EVENTS_HELPER_H_
+#define CONTENT_BROWSER_RENDERER_HOST_UI_EVENTS_HELPER_H_
+
+#include "base/memory/scoped_vector.h"
+
+namespace WebKit {
+class WebTouchEvent;
+}
+
+namespace ui {
+class TouchEvent;
+}
+
+namespace content {
+
+// Creates a list of ui::TouchEvents out of a single WebTouchEvent.
+// A WebTouchEvent can contain information about a number of WebTouchPoints,
+// whereas a ui::TouchEvent contains information about a single touch-point. So
+// it is possible to create more than one ui::TouchEvents out of a single
+// WebTouchEvent.
+bool MakeUITouchEventsFromWebTouchEvents(const WebKit::WebTouchEvent& touch,
+                                         ScopedVector<ui::TouchEvent>* list);
+}
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_UI_EVENTS_HELPER_H_