[Refactor] to rename and re-layer the file_util stack layers.

webkit/fileapi/sandbox_mount_point_provider.h

Index: webkit/fileapi/sandbox_mount_point_provider.h
diff --git a/webkit/fileapi/sandbox_mount_point_provider.h b/webkit/fileapi/sandbox_mount_point_provider.h
index 199185d704e2bfbd35fd2ec8ae6c3c0afea3551a..f7152e8080a38af39cfe40af7b59da74d22005c7 100644
--- a/webkit/fileapi/sandbox_mount_point_provider.h
+++ b/webkit/fileapi/sandbox_mount_point_provider.h
@@ -25,7 +25,7 @@ class QuotaManagerProxy;
 
 namespace fileapi {
 
-class ObfuscatedFileSystemFileUtil;
+class ObfuscatedFileUtil;
 class QuotaFileUtil;
 
 // An interface to construct or crack sandboxed filesystem paths.
@@ -109,7 +109,7 @@ class SandboxMountPointProvider
       FileSystemType type,
       bool create) const;
 
-  virtual FileSystemFileUtil* GetFileSystemFileUtil();
+  virtual FileUtil* GetFileUtil();
 
   // Deletes the data on the origin and reports the amount of deleted data
   // to the quota manager via |proxy|.
@@ -171,7 +171,7 @@ class SandboxMountPointProvider
   const FilePath profile_path_;
 
   QuotaFileUtil *quota_file_util_;
-  scoped_refptr<ObfuscatedFileSystemFileUtil> sandbox_file_util_;
+  scoped_refptr<ObfuscatedFileUtil> sandbox_file_util_;
 
   // Acccessed only on the file thread.
   std::set<GURL> visited_origins_;