Added rendering benchmark javascript hook

content/renderer/rendering_benchmark.h

Index: content/renderer/rendering_benchmark.h
diff --git a/content/renderer/rendering_benchmark.h b/content/renderer/rendering_benchmark.h
new file mode 100644
index 0000000000000000000000000000000000000000..c99236d2c1dc0c19bf257d9a2e878e63b1cd8fa2
--- /dev/null
+++ b/content/renderer/rendering_benchmark.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_RENDERING_BENCHMARK_H_
+#define CONTENT_RENDERER_RENDERING_BENCHMARK_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+namespace WebKit {
+class WebViewBenchmarkSupport;
+}
+
+namespace content {
+class RenderingBenchmarkResults;
+
+class RenderingBenchmark {
+ public:
+  explicit RenderingBenchmark(const std::string& name);
+  virtual ~RenderingBenchmark();
+
+  virtual void SetUp(WebKit::WebViewBenchmarkSupport* benchmarkSupport) {}
+
+  virtual void Run(RenderingBenchmarkResults* results,
+                   WebKit::WebViewBenchmarkSupport* benchmarkSupport) = 0;
+
+  virtual void TearDown(WebKit::WebViewBenchmarkSupport* benchmarkSupport) {}
+
+  const std::string& name() { return name_; }
+
+ private:
+  const std::string name_;
+
+  DISALLOW_COPY_AND_ASSIGN(RenderingBenchmark);
+};
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_RENDERING_BENCHMARK_H_