[WIP] make GURL::path() return a StringPiece

net/base/sdch_dictionary.h

 // Copyright 2015 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 NET_BASE_SDCH_DICTIONARY_H_
 #define NET_BASE_SDCH_DICTIONARY_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 49 matching lines @@
   static SdchProblemCode CanSet(const std::string& domain,
                                 const std::string& path,
                                 const std::set<int>& ports,
                                 const GURL& dictionary_url);
 
   // Security method to check if we can use a dictionary to decompress a
   // target that arrived with a reference to this dictionary.
   SdchProblemCode CanUse(const GURL& referring_url) const;
 
   // Compare paths to see if they "match" for dictionary use.
-  static bool PathMatch(const std::string& path,
-                        const std::string& restriction);
+  static bool PathMatch(const base::StringPiece& path,
+                        const base::StringPiece& restriction);
 
   // Is this dictionary expired?
   bool Expired() const;
 
  private:
   friend class base::RefCountedData<SdchDictionary>;
 
   // Private copy-constructor to support RefCountedData<>, which requires
   // that an object stored in it be either DefaultConstructible or
   // CopyConstructible
@@ skipping 21 matching lines @@
   const std::string path_;
   const base::Time expiration_;  // Implied by max-age.
   const std::set<int> ports_;
 
   void operator=(const SdchDictionary&) = delete;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_SDCH_DICTIONARY_H_