Move //components/test_runner back into //content/shell

components/test_runner/layout_and_paint_async_then.h

Index: components/test_runner/layout_and_paint_async_then.h
diff --git a/components/test_runner/layout_and_paint_async_then.h b/components/test_runner/layout_and_paint_async_then.h
deleted file mode 100644
index be8ee491385d0609efba001eebb55a65ad94021d..0000000000000000000000000000000000000000
--- a/components/test_runner/layout_and_paint_async_then.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2016 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 COMPONENTS_TEST_RUNNER_LAYOUT_AND_PAINT_ASYNC_THEN_H_
-#define COMPONENTS_TEST_RUNNER_LAYOUT_AND_PAINT_ASYNC_THEN_H_
-
-#include "base/callback_forward.h"
-#include "components/test_runner/test_runner_export.h"
-
-namespace blink {
-class WebWidget;
-}  // namespace blink
-
-namespace test_runner {
-
-// Triggers a layout and paint of |web_widget| and its popup (if any).
-// Calls |callback| after the layout and paint happens (for both the
-// |web_widget| and its popup (if any)).
-TEST_RUNNER_EXPORT void LayoutAndPaintAsyncThen(blink::WebWidget* web_widget,
-                                                const base::Closure& callback);
-
-}  // namespace test_runner
-
-#endif  // COMPONENTS_TEST_RUNNER_LAYOUT_AND_PAINT_ASYNC_THEN_H_