Add gamepad hardware data fetcher, and higher level thread container

content/browser/gamepad/data_fetcher_win.h

+// Copyright (c) 2011 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_GAMEPAD_DATA_FETCHER_WIN_H_
+#define CONTENT_BROWSER_GAMEPAD_DATA_FETCHER_WIN_H_
+
+#include "build/build_config.h"
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <XInput.h>
+
+#include "base/compiler_specific.h"
+#include "content/browser/gamepad/data_fetcher.h"
+
+namespace gamepad {
+
+class DataFetcherWindows : public DataFetcher {
+ public:
+  DataFetcherWindows();
+  virtual void GetGamepadData(WebKit::WebGamepads* pads,
+                              bool devices_changed_hint) OVERRIDE;
+ private:
+  bool xinput_available_;
+};
+
+}  // namespace gamepad
+
+#endif  // CONTENT_BROWSER_GAMEPAD_DATA_FETCHER_WIN_H_