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diff --git a/chrome/browser/extensions/extension_function_dispatcher.h b/chrome/browser/extensions/extension_function_dispatcher.h
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+++ b/chrome/browser/extensions/extension_function_dispatcher.h
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+// Copyright (c) 2009 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 CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_DISPATCHER_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_DISPATCHER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/values.h"
+
+class ExtensionFunction;
+class RenderViewHost;
+
+// ExtensionFunctionDispatcher receives requests to execute functions from
+// Chromium extensions running in a RenderViewHost and dispatches them to the
+// appropriate handler. It lives entirely on the UI thread.
+class ExtensionFunctionDispatcher {
+ public:
+  // Gets a list of all known extension function names.
+  static void GetAllFunctionNames(std::vector<std::string>* names);
+
+  ExtensionFunctionDispatcher(RenderViewHost* render_view_host);
+
+  // Handle a request to execute an extension function.
+  void HandleRequest(const std::string& name, const std::string& args,
+                     int callback_id);
+
+  // Send a response to a function.
+  void SendResponse(ExtensionFunction* api);
+
+ private:
+  RenderViewHost* render_view_host_;
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_FUNCTION_DISPATCHER_H_