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diff --git a/Source/WebKit/chromium/public/platform/WebFloatQuad.h b/Source/WebKit/chromium/public/platform/WebFloatQuad.h
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+++ b/Source/WebKit/chromium/public/platform/WebFloatQuad.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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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 WebFloatQuad_h
+#define WebFloatQuad_h
+
+#include "WebCommon.h"
+#include "WebFloatPoint.h"
+#include "WebRect.h"
+
+#include <algorithm>
+#include <cmath>
+
+#if WEBKIT_IMPLEMENTATION
+#include "FloatQuad.h"
+#endif
+
+namespace WebKit {
+
+struct WebFloatQuad {
+    WebFloatPoint p[4];
+
+    WebFloatQuad()
+    {
+    }
+
+    WebFloatQuad(const WebFloatPoint& p0, const WebFloatPoint& p1, const WebFloatPoint& p2, const WebFloatPoint& p3)
+    {
+        p[0] = p0;
+        p[1] = p1;
+        p[2] = p2;
+        p[3] = p3;
+    }
+
+    WEBKIT_EXPORT WebRect enclosingRect() const;
+
+#if WEBKIT_IMPLEMENTATION
+    WebFloatQuad& operator=(const WebCore::FloatQuad& q)
+    {
+        p[0] = q.p1();
+        p[1] = q.p2();
+        p[2] = q.p3();
+        p[3] = q.p4();
+        return *this;
+    }
+    WebFloatQuad(const WebCore::FloatQuad& q)
+    {
+        *this = q;
+    }
+#endif
+};
+
+} // namespace WebKit
+
+#endif