Fix up some tests for copy-or-move validator and nearby.

webkit/browser/fileapi/test_file_system_backend.cc

Index: webkit/browser/fileapi/test_file_system_backend.cc
diff --git a/webkit/browser/fileapi/test_file_system_backend.cc b/webkit/browser/fileapi/test_file_system_backend.cc
index 547d6eb4f362db72f1c9dd074f9c681fa935a161..6879fb53d2ddcaf28f23770025f65e073322d45c 100644
--- a/webkit/browser/fileapi/test_file_system_backend.cc
+++ b/webkit/browser/fileapi/test_file_system_backend.cc
@@ -185,11 +185,6 @@ TestFileSystemBackend::GetCopyOrMoveFileValidatorFactory(
 
 void TestFileSystemBackend::InitializeCopyOrMoveFileValidatorFactory(
     scoped_ptr<CopyOrMoveFileValidatorFactory> factory) {
-  // What purpose is this check serving?
-  if (!require_copy_or_move_validator_) {
-    DCHECK(!factory);
-    return;
-  }
   if (!copy_or_move_file_validator_factory_)
     copy_or_move_file_validator_factory_ = factory.Pass();
 }