IPC::ParamTraits for ui::PointerEvent.

ui/events/event.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_EVENTS_EVENT_H_
 #define UI_EVENTS_EVENT_H_
 
 #include <stdint.h>
 #include "base/compiler_specific.h"
 #include "base/event_types.h"
@@ skipping 734 matching lines @@
                EventPointerType pointer_type,
                const gfx::Point& location,
                const gfx::Point& root_location,
                int flags,
                int pointer_id,
                base::TimeDelta time_stamp);
 
   int32_t pointer_id() const { return pointer_id_; }
   const PointerDetails& pointer_details() const { return details_; }
 
+ protected:
+  // For (de)serialization.
+  PointerEvent(EventType type, base::TimeDelta time_stamp, int flags)
+      : LocatedEvent(type, time_stamp, flags) {}
+  friend struct IPC::ParamTraits<ui::ScopedEvent>;
+  friend struct IPC::ParamTraits<ui::PointerEvent>;
+
  private:
   int32_t pointer_id_;
   PointerDetails details_;
 };
 
 // An interface that individual platforms can use to store additional data on
 // KeyEvent.
 //
 // Currently only used in mojo.
 class EVENTS_EXPORT ExtendedKeyEventData {
@@ skipping 283 matching lines @@
       : LocatedEvent(type, time_stamp, flags) {}
   friend struct IPC::ParamTraits<ui::ScopedEvent>;
   friend struct IPC::ParamTraits<ui::GestureEvent>;
 
   GestureEventDetails details_;
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_H_