Revert 167539 "Updating Blink-side Gamepad API to match latest spec"

trunk/Source/modules/gamepad/GamepadButton.cpp

-// 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.
-
-#include "config.h"
-#include "modules/gamepad/Gamepad.h"
-
-namespace WebCore {
-
-PassRefPtr<GamepadButton> GamepadButton::create()
-{
-    RefPtr<GamepadButton> input = adoptRef(new GamepadButton());
-    return input.release();
-}
-
-GamepadButton::GamepadButton()
-    : m_value(0.f)
-    , m_pressed(false)
-{
-    ScriptWrappable::init(this);
-}
-
-GamepadButton::~GamepadButton()
-{
-}
-
-} // namespace WebCore