Stop returning the true root path of each filesystem from openFileSystem....

base/platform_file.h

 // Copyright (c) 2011 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 BASE_PLATFORM_FILE_H_
 #define BASE_PLATFORM_FILE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
+#include "base/file_path.h"
 #include "base/time.h"
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include <string>
 
-class FilePath;
-
 namespace base {
 
 #if defined(OS_WIN)
 typedef HANDLE PlatformFile;
 const PlatformFile kInvalidPlatformFileValue = INVALID_HANDLE_VALUE;
 #elif defined(OS_POSIX)
 typedef int PlatformFile;
 const PlatformFile kInvalidPlatformFileValue = -1;
 #endif
 
@@ skipping 54 matching lines @@
   bool is_symbolic_link;
 
   // The last modified time of a file.
   base::Time last_modified;
 
   // The last accessed time of a file.
   base::Time last_accessed;
 
   // The creation time of a file.
   base::Time creation_time;
+
+  // The full path of a file.  Currently only used by FileSystemFileUtil during
+  // a GetMetadata operation.
+  FilePath path;
 };
 
 // Creates or opens the given file. If PLATFORM_FILE_OPEN_ALWAYS is used, and
 // |created| is provided, |created| will be set to true if the file was created
 // or to false in case the file was just opened. |error_code| can be NULL.
 PlatformFile CreatePlatformFile(const FilePath& name,
                                 int flags,
                                 bool* created,
                                 PlatformFileError* error_code);
 
@@ skipping 59 matching lines @@
     return temp;
   }
 
  private:
   PlatformFile* value_;
 };
 
 }  // namespace base
 
 #endif  // BASE_PLATFORM_FILE_H_