Revert of Moves ash content specific tests into ash_content_unittests

chrome/test/base/ash_test_environment_chrome.h

Index: chrome/test/base/ash_test_environment_chrome.h
diff --git a/chrome/test/base/ash_test_environment_chrome.h b/chrome/test/base/ash_test_environment_chrome.h
deleted file mode 100644
index 06708c85e85f5763f4d042723d23e4bf9eab3f48..0000000000000000000000000000000000000000
--- a/chrome/test/base/ash_test_environment_chrome.h
+++ /dev/null
@@ -1,24 +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 CHROME_TEST_BASE_ASH_TEST_ENVIRONMENT_CHROME_H_
-#define CHROME_TEST_BASE_ASH_TEST_ENVIRONMENT_CHROME_H_
-
-#include "ash/test/ash_test_environment.h"
-#include "base/macros.h"
-
-class AshTestEnvironmentChrome : public ash::test::AshTestEnvironment {
- public:
-  AshTestEnvironmentChrome();
-  ~AshTestEnvironmentChrome() override;
-
-  // AshTestEnvironment:
-  base::SequencedWorkerPool* GetBlockingPool() override;
-  std::unique_ptr<views::ViewsDelegate> CreateViewsDelegate() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(AshTestEnvironmentChrome);
-};
-
-#endif  // CHROME_TEST_BASE_ASH_TEST_ENVIRONMENT_CHROME_H_