Reverting 7423.

base/file_path.h

 // Copyright (c) 2008 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.
 
 // FilePath is a container for pathnames stored in a platform's native string
 // type, providing containers for manipulation in according with the
 // platform's conventions for pathnames.  It supports the following path
 // types:
 //
 //                   POSIX            Windows
@@ skipping 114 matching lines @@
     return path_ == that.path_;
   }
 
   // Required for some STL containers and operations
   bool operator<(const FilePath& that) const {
     return path_ < that.path_;
   }
 
   const StringType& value() const { return path_; }
 
-  // Returns value() encoded as a UTF8 std::string.  Be careful to not use this
-  // in places that use filesystem APIs as it won't be portable.
-  const std::string UTF8Value() const;
-
   // Returns true if |character| is in kSeparators.
   static bool IsSeparator(CharType character);
 
   // Returns a FilePath corresponding to the directory containing the path
   // named by this object, stripping away the file component.  If this object
   // only contains one component, returns a FilePath identifying
   // kCurrentDirectory.  If this object already refers to the root directory,
   // returns a FilePath identifying the root directory.
   FilePath DirName() const;
 
@@ skipping 67 matching lines @@
 struct hash<FilePath> {
   size_t operator()(const FilePath& f) const {
     return std::tr1::hash<FilePath::StringType>()(f.value());
   }
 };
 
 }  // namespace __gnu_cxx
 #endif  // defined(COMPILER_GCC)
 
 #endif  // BASE_FILE_PATH_H_