It is time.

ui/views/controls/tree/tree_view_controller.cc

Index: ui/views/controls/tree/tree_view_controller.cc
diff --git a/ui/views/controls/tree/tree_view_controller.cc b/ui/views/controls/tree/tree_view_controller.cc
deleted file mode 100644
index 670d0ed516e82cdf0ed6e1cb20bcebdf4bee8bda..0000000000000000000000000000000000000000
--- a/ui/views/controls/tree/tree_view_controller.cc
+++ /dev/null
@@ -1,19 +0,0 @@
-// 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.
-
-#include "ui/views/controls/tree/tree_view_controller.h"
-
-#include "ui/base/models/tree_model.h"
-#include "ui/views/controls/tree/tree_view.h"
-
-namespace views {
-
-bool TreeViewController::CanEdit(TreeView* tree_view, ui::TreeModelNode* node) {
-  return true;
-}
-
-TreeViewController::~TreeViewController() {
-}
-
-}  // namespace views