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diff --git a/Source/WebKit/chromium/public/platform/WebGamepads.h b/Source/WebKit/chromium/public/platform/WebGamepads.h
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+++ b/Source/WebKit/chromium/public/platform/WebGamepads.h
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+// Copyright (C) 2011, Google Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+// DAMAGE.
+
+#ifndef WebGamepads_h
+#define WebGamepads_h
+
+#include "WebGamepad.h"
+
+namespace WebKit {
+
+// This structure is intentionally POD and fixed size so that it can be stored
+// in shared memory between hardware polling threads and the rest of the
+// browser.
+class WebGamepads {
+public:
+    WebGamepads()
+        : length(0) { }
+
+    static const size_t itemsLengthCap = 4;
+
+    // Number of valid entries in the items array.
+    unsigned length;
+
+    // Gamepad data for N separate gamepad devices.
+    WebGamepad items[itemsLengthCap];
+};
+
+}
+
+#endif // WebGamepads_h