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diff --git a/Source/WebKit/chromium/tests/MockCCQuadCuller.h b/Source/WebKit/chromium/tests/MockCCQuadCuller.h
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+++ b/Source/WebKit/chromium/tests/MockCCQuadCuller.h
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+/*
+ * Copyright (C) 2012 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 MockCCQuadCuller_h
+#define MockCCQuadCuller_h
+
+#include "IntRect.h"
+#include "cc/CCDrawQuad.h"
+#include "cc/CCQuadCuller.h"
+#include <wtf/PassOwnPtr.h>
+
+namespace WebCore {
+
+class MockCCQuadCuller : public WebCore::CCQuadCuller {
+public:
+    MockCCQuadCuller()
+        : CCQuadCuller(m_quadListStorage, 0, 0)
+        , m_activeQuadList(m_quadListStorage)
+    { }
+
+    explicit MockCCQuadCuller(CCQuadList& externalQuadList)
+        : CCQuadCuller(externalQuadList, 0, 0)
+        , m_activeQuadList(externalQuadList)
+    { }
+
+    virtual bool append(WTF::PassOwnPtr<WebCore::CCDrawQuad> newQuad)
+    {
+        OwnPtr<WebCore::CCDrawQuad> drawQuad = newQuad;
+        if (!drawQuad->quadRect().isEmpty()) {
+            m_activeQuadList.append(drawQuad.release());
+            return true;
+        }
+        return false;
+    }
+
+    const WebCore::CCQuadList& quadList() const { return m_activeQuadList; };
+
+private:
+    WebCore::CCQuadList& m_activeQuadList;
+    WebCore::CCQuadList m_quadListStorage;
+};
+
+} // namespace WebCore
+#endif // MockCCQuadCuller_h