Removed deprecated navigator.webkitGetGamepads.

Source/modules/gamepad/WebKitGamepadList.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/WebKitGamepadList.h"
-
-namespace blink {
-
-WebKitGamepadList::WebKitGamepadList()
-{
-}
-
-void WebKitGamepadList::set(unsigned index, WebKitGamepad* gamepad)
-{
-    if (index >= WebGamepads::itemsLengthCap)
-        return;
-    m_items[index] = gamepad;
-}
-
-WebKitGamepad* WebKitGamepadList::item(unsigned index)
-{
-    return index < length() ? m_items[index].get() : 0;
-}
-
-void WebKitGamepadList::trace(Visitor* visitor)
-{
-    for (unsigned index = 0; index < WebGamepads::itemsLengthCap; index++) {
-        visitor->trace(m_items[index]);
-    }
-}
-
-} // namespace blink