Adds AshTest

ash/test/ash_test_impl_aura.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_MUS_TEST_ASH_TEST_IMPL_AURA_H_
+#define ASH_MUS_TEST_ASH_TEST_IMPL_AURA_H_
+
+#include "ash/common/test/ash_test_impl.h"
+
+namespace ash {
+namespace test {
+class AshTestBase;
+}
+
+// Implementation of AshTestImpl on top of aura. Implementation of AshTestImpl
+// calls through to AshTestBase.
+class AshTestImplAura : public AshTestImpl {
+ public:
+  AshTestImplAura();
+  ~AshTestImplAura() override;
+
+  // AshTestImpl:
+  void SetUp() override;
+  void TearDown() override;
+  bool SupportsMultipleDisplays() const override;
+  void UpdateDisplay(const std::string& display_spec) override;
+  std::unique_ptr<WindowOwner> CreateTestWindow(
+      const gfx::Rect& bounds_in_screen,
+      ui::wm::WindowType type,
+      int shell_window_id) override;
+  display::Display GetSecondaryDisplay() override;
+  bool SetSecondaryDisplayPlacement(
+      display::DisplayPlacement::Position position,
+      int offset) override;
+
+ private:
+  std::unique_ptr<test::AshTestBase> ash_test_base_;
+
+  DISALLOW_COPY_AND_ASSIGN(AshTestImplAura);
+};
+
+}  // namespace ash
+
+#endif  // ASH_MUS_TEST_ASH_TEST_IMPL_AURA_H_