Render comment for FilePath::ReferencesParent() more precisely.

base/files/file_path.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.
 
 // 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 303 matching lines @@
   bool EndsWithSeparator() const WARN_UNUSED_RESULT;
 
   // Returns a copy of this FilePath that ends with a trailing separator. If
   // the input path is empty, an empty FilePath will be returned.
   FilePath AsEndingWithSeparator() const WARN_UNUSED_RESULT;
 
   // Returns a copy of this FilePath that does not end with a trailing
   // separator.
   FilePath StripTrailingSeparators() const WARN_UNUSED_RESULT;
 
-  // Returns true if this FilePath contains any attempt to reference a parent
-  // directory (i.e. has a path component that is ".."
+  // Returns true if this FilePath contains an attempt to reference a parent
+  // directory (e.g. has a path component that is "..").
   bool ReferencesParent() const;
 
   // Return a Unicode human-readable version of this path.
   // Warning: you can *not*, in general, go from a display name back to a real
   // path.  Only use this when displaying paths to users, not just when you
   // want to stuff a string16 into some other API.
   string16 LossyDisplayName() const;
 
   // Return the path as ASCII, or the empty string if the path is not ASCII.
   // This should only be used for cases where the FilePath is representing a
@@ skipping 130 matching lines @@
 
 inline size_t hash_value(const base::FilePath& f) {
   return hash_value(f.value());
 }
 
 #endif  // COMPILER
 
 }  // namespace BASE_HASH_NAMESPACE
 
 #endif  // BASE_FILES_FILE_PATH_H_