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diff --git a/WebKit/chromium/public/WebDeviceOrientation.h b/WebKit/chromium/public/WebDeviceOrientation.h
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+++ b/WebKit/chromium/public/WebDeviceOrientation.h
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+/*
+ * Copyright (C) 2010 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 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 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 WebDeviceOrientation_h
+#define WebDeviceOrientation_h
+
+#if WEBKIT_IMPLEMENTATION
+namespace WTF { template <typename T> class PassRefPtr; }
+namespace WebCore { class DeviceOrientation; }
+#endif
+
+namespace WebKit {
+
+class WebDeviceOrientation {
+public:
+    WebDeviceOrientation(bool canProvideAlpha, double alpha, bool canProvideBeta, double beta, bool canProvideGamma, double gamma)
+        : m_isNull(false),
+          m_canProvideAlpha(canProvideAlpha),
+          m_alpha(alpha),
+          m_canProvideBeta(canProvideBeta),
+          m_beta(beta),
+          m_canProvideGamma(canProvideGamma),
+          m_gamma(gamma)
+    {
+    }
+
+    static WebDeviceOrientation nullOrientation() { return WebDeviceOrientation(); }
+
+    bool isNull() { return m_isNull; }
+    bool canProvideAlpha() { return m_canProvideAlpha; }
+    double alpha() { return m_alpha; }
+    bool canProvideBeta() { return m_canProvideBeta; }
+    double beta() { return m_beta; }
+    bool canProvideGamma() { return m_canProvideGamma; }
+    double gamma() { return m_gamma; }
+
+#if WEBKIT_IMPLEMENTATION
+    WebDeviceOrientation(const WTF::PassRefPtr<WebCore::DeviceOrientation>&);
+    WebDeviceOrientation& operator=(const WTF::PassRefPtr<WebCore::DeviceOrientation>&);
+    operator WTF::PassRefPtr<WebCore::DeviceOrientation>() const;
+#endif
+
+private:
+    WebDeviceOrientation()
+        : m_isNull(true),
+          m_canProvideAlpha(false),
+          m_alpha(0),
+          m_canProvideBeta(false),
+          m_beta(0),
+          m_canProvideGamma(false),
+          m_gamma(0)
+    {
+    }
+
+    bool m_isNull;
+    bool m_canProvideAlpha;
+    double m_alpha;
+    bool m_canProvideBeta;
+    double m_beta;
+    bool m_canProvideGamma;
+    double m_gamma;
+};
+
+} // namespace WebKit
+
+#endif // WebDeviceOrientation_h