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diff --git a/Source/WebKit/chromium/src/WebViewBenchmarkSupportImpl.h b/Source/WebKit/chromium/src/WebViewBenchmarkSupportImpl.h
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+++ b/Source/WebKit/chromium/src/WebViewBenchmarkSupportImpl.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:
+ *
+ *     * 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 WebViewBenchmarkSupportImpl_h
+#define WebViewBenchmarkSupportImpl_h
+
+#include "WebViewBenchmarkSupport.h"
+
+namespace WebCore {
+class IntRect;
+class GraphicsLayer;
+}
+
+namespace WebKit {
+class WebViewImpl;
+
+class WebViewBenchmarkSupportImpl : public WebViewBenchmarkSupport {
+public:
+    explicit WebViewBenchmarkSupportImpl(WebViewImpl* webViewImpl) : m_webViewImpl(webViewImpl) { }
+    virtual ~WebViewBenchmarkSupportImpl() { }
+
+    // Paints the WebViewImpl onto canvases created from the PaintClient.
+    // If we're in accelerated mode, a new canvas is created for each graphics
+    // layer. Layout() will be called on the web view prior to painting.
+    virtual void paint(PaintClient*, PaintMode) OVERRIDE;
+
+private:
+    void paintLayer(PaintClient*, WebCore::GraphicsLayer&, const WebCore::IntRect& clip);
+
+    // Paints the given graphics layer hierarchy to canvases created by the
+    // canvas factory.
+    void acceleratedPaintUnclipped(PaintClient*, WebCore::GraphicsLayer&);
+    void softwarePaint(PaintClient*, PaintMode);
+
+    WebViewImpl* m_webViewImpl;
+};
+}
+
+#endif // WebViewBenchmarkSupportImpl_h