Change {Obfuscated|Local}FileSystemFileUtil non-Singleton to take an underlying *FileUtil.

webkit/chromeos/fileapi/cros_mount_point_provider.h

Index: webkit/chromeos/fileapi/cros_mount_point_provider.h
diff --git a/webkit/chromeos/fileapi/cros_mount_point_provider.h b/webkit/chromeos/fileapi/cros_mount_point_provider.h
index 40afae2145b3a621831c59af383e9de1603fa9cc..af7a65793a01291458dc42683938ef3b54649693 100644
--- a/webkit/chromeos/fileapi/cros_mount_point_provider.h
+++ b/webkit/chromeos/fileapi/cros_mount_point_provider.h
@@ -12,8 +12,13 @@
 #include "base/file_path.h"
 #include "base/synchronization/lock.h"
 #include "webkit/fileapi/file_system_mount_point_provider.h"
+#include "webkit/fileapi/local_file_system_file_util.h"
 #include "webkit/quota/special_storage_policy.h"
 
+namespace fileapi {
+class FileSystemFileUtil;
+}
+
 namespace chromeos {
 
 class FileAccessPermissions;
@@ -42,6 +47,7 @@ class CrosMountPointProvider
       bool create);
   virtual bool IsRestrictedFileName(const FilePath& filename) const OVERRIDE;
   virtual std::vector<FilePath> GetRootDirectories() const OVERRIDE;
+  virtual fileapi::FileSystemFileUtil* GetFileSystemFileUtil() OVERRIDE;
 
   // fileapi::ExternalFileSystemMountPointProvider overrides.
   virtual void GrantFullAccessToExtension(
@@ -67,6 +73,7 @@ class CrosMountPointProvider
   MountPointMap mount_point_map_;
   scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy_;
   scoped_ptr<FileAccessPermissions> file_access_permissions_;
+  scoped_ptr<fileapi::LocalFileSystemFileUtil> local_file_util_;
   DISALLOW_COPY_AND_ASSIGN(CrosMountPointProvider);
 };