Gamepad API: add support for connection events

content/common/gamepad_connection_event_message_params.h

+// 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 CONTENT_COMMON_GAMEPAD_CONNECTION_EVENT_MESSAGE_PARAMS
+#define CONTENT_COMMON_GAMEPAD_CONNECTION_EVENT_MESSAGE_PARAMS
+
+#include <vector>
+
+#include "third_party/WebKit/public/platform/WebGamepad.h"
+
+namespace content {
+
+struct GamepadConnectionEventMessageParams {
+  GamepadConnectionEventMessageParams();
+  GamepadConnectionEventMessageParams(int index,
+                                      const blink::WebGamepad& gamepad);
+  ~GamepadConnectionEventMessageParams();
+
+  void GetWebGamepad(blink::WebGamepad* gamepad) const;
+
+  std::vector<blink::WebUChar> id_characters;
+  std::vector<blink::WebUChar> mapping_characters;
+  int index;
+  unsigned long long timestamp;
+  int axes_length;
+  int buttons_length;
+  bool connected;
+};
+
+} // namespace content
+
+#endif // CONTENT_COMMON_GAMEPAD_CONNECTION_EVENT_MESSAGE_PARAMS