Change the way the ToplevelEventHandler is hooked up. It is now both a pre- and post-target event h…

ui/base/events/event_functions.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 UI_BASE_EVENTS_EVENT_FUNCTIONS_H_
+#define UI_BASE_EVENTS_EVENT_FUNCTIONS_H_
+
+#include "ui/base/ui_export.h"
+
+namespace ui {
+
+class Event;
+
+// Returns true if default post-target handling was canceled for |event| after
+// its dispatch to its target.
+UI_EXPORT bool EventCanceledDefaultHandling(const ui::Event& event);
+
+}  // namespace ui
+
+#endif  // UI_BASE_EVENTS_EVENT_FUNCTIONS_H_