Moves ash content specific tests into ash_content_unittests

ash/test/ash_test_environment.h

+// 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 ASH_TEST_ASH_TEST_ENVIRONMENT_H_
+#define ASH_TEST_ASH_TEST_ENVIRONMENT_H_
+
+#include <memory>
+
+namespace base {
+class SequencedWorkerPool;
+}
+
+namespace views {
+class ViewsDelegate;
+}
+
+namespace ash {
+namespace test {
+
+// AshTestEnvironment creates objects specific to an environment. Two
+// environments are provided, one for content (AshTestEnvironmentContent)
+// and one without content (AshTestEnvironmentDefault).
+//
+// AshTestBase creates an AshTestEnvironment by way of
+// AshTestEnvironment::Create(). The implementation of Create() depends upon
+// the ash target that was linked against: //ash:test_support_with_content
+// includes AshTestEnvironmentContent and //ash:test_support_without_content
+// includes AshTestEnvironmentDefault.
+class AshTestEnvironment {
+ public:
+  virtual ~AshTestEnvironment() {}
+
+  // Creates the object appropriate to the current environment.
+  static std::unique_ptr<AshTestEnvironment> Create();
+
+  // Called from AshTestHelper::SetUp()/TearDown().
+  virtual void SetUp() {}
+  virtual void TearDown() {}
+
+  virtual base::SequencedWorkerPool* GetBlockingPool() = 0;
+
+  virtual std::unique_ptr<views::ViewsDelegate> CreateViewsDelegate() = 0;
+
+ protected:
+  AshTestEnvironment() {}
+};
+
+}  // namespace test
+}  // namespace ash
+
+#endif  // ASH_TEST_ASH_TEST_ENVIRONMENT_H_