exo: Implement wayland gamepad support

device/gamepad/gamepad_data_fetcher.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 DEVICE_GAMEPAD_GAMEPAD_DATA_FETCHER_H_
 #define DEVICE_GAMEPAD_GAMEPAD_DATA_FETCHER_H_
 
 #include <stdint.h>
 
 #include <limits>
 
 #include "build/build_config.h"
+#include "device/gamepad/gamepad_export.h"
 #include "device/gamepad/gamepad_standard_mappings.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 
 namespace device {
 
 // Abstract interface for imlementing platform- (and test-) specific behaviro
 // for getting the gamepad data.
-class GamepadDataFetcher {
+class DEVICE_GAMEPAD_EXPORT GamepadDataFetcher {
  public:
   virtual ~GamepadDataFetcher() {}
   virtual void GetGamepadData(blink::WebGamepads* pads,
                               bool devices_changed_hint) = 0;
   virtual void PauseHint(bool paused) {}
 
 #if !defined(OS_ANDROID)
   struct PadState {
     // Gamepad data, unmapped.
     blink::WebGamepad data;
@@ skipping 23 matching lines @@
   void MapAndSanitizeGamepadData(PadState* pad_state, blink::WebGamepad* pad);
 
  protected:
   PadState pad_state_[blink::WebGamepads::itemsLengthCap];
 #endif
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GAMEPAD_GAMEPAD_DATA_FETCHER_H_