Move RLZ extension API to rlz directory.

chrome/browser/rlz/rlz_extension_api.h

 // Copyright (c) 2010 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_RLZ_MODULE_H__
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_RLZ_MODULE_H__
+#ifndef CHROME_BROWSER_RLZ_RLZ_EXTENSION_API_H_
+#define CHROME_BROWSER_RLZ_RLZ_EXTENSION_API_H_
 #pragma once
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 
 #include "chrome/browser/extensions/extension_function.h"
 
 class RlzRecordProductEventFunction : public SyncExtensionFunction {
   virtual bool RunImpl();
@@ skipping 12 matching lines @@
   virtual bool RunImpl();
 };
 
 class RlzClearProductStateFunction : public SyncExtensionFunction {
   virtual bool RunImpl();
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.rlz.clearProductState")
 };
 
 #endif  // defined(OS_WIN)
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_RLZ_MODULE_H__
+#endif  // CHROME_BROWSER_RLZ_RLZ_EXTENSION_API_H_