It is time.

ui/views/test/test_widget_observer.h

Index: ui/views/test/test_widget_observer.h
diff --git a/ui/views/test/test_widget_observer.h b/ui/views/test/test_widget_observer.h
deleted file mode 100644
index 064db84e01c80c3246d913bc94b5eea0ed502e69..0000000000000000000000000000000000000000
--- a/ui/views/test/test_widget_observer.h
+++ /dev/null
@@ -1,37 +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.
-
-#ifndef UI_VIEWS_TEST_TEST_WIDGET_OBSERVER_H_
-#define UI_VIEWS_TEST_TEST_WIDGET_OBSERVER_H_
-
-#include <stddef.h>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/views/widget/widget_observer.h"
-
-namespace views {
-namespace test {
-
-// A Widget observer class used in the tests below to observe bubbles closing.
-class TestWidgetObserver : public WidgetObserver {
- public:
-  explicit TestWidgetObserver(Widget* widget);
-  virtual ~TestWidgetObserver();
-
-  bool widget_closed() const { return widget_ == NULL; }
-
- private:
-  // WidgetObserver overrides:
-  virtual void OnWidgetDestroying(Widget* widget) override;
-
-  Widget* widget_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestWidgetObserver);
-};
-
-}  // namespace test
-}  // namespace views
-
-#endif  // UI_VIEWS_TEST_TEST_WIDGET_OBSERVER_H_