Move c/c/extensions/matcher/ to top level extension dir

extensions/common/matcher/url_matcher_helpers.h

 // 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.
 
 // Helper functions used for URLMatcher and Declarative APIs.
 
-#ifndef CHROME_COMMON_EXTENSIONS_MATCHER_URL_MATCHER_HELPERS_H_
-#define CHROME_COMMON_EXTENSIONS_MATCHER_URL_MATCHER_HELPERS_H_
+#ifndef EXTENSIONS_COMMON_MATCHER_URL_MATCHER_HELPERS_H_
+#define EXTENSIONS_COMMON_MATCHER_URL_MATCHER_HELPERS_H_
 
 #include <string>
 #include <vector>
 
 namespace base {
 class Value;
 }
 
 namespace extensions {
 namespace url_matcher_helpers {
 
 // Converts a ValueList |value| of strings into a vector. Returns true if
 // successful.
 bool GetAsStringVector(const base::Value* value, std::vector<std::string>* out);
 
 }  // namespace declarative_helpers
 }  // namespace extensions
 
-#endif  // CHROME_COMMON_EXTENSIONS_MATCHER_URL_MATCHER_HELPERS_H_
+#endif  // EXTENSIONS_COMMON_MATCHER_URL_MATCHER_HELPERS_H_