Adds AshTest

ash/test/ash_test_impl_aura.cc

+// 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.
+
+#include "ash/test/ash_test_impl_aura.h"
+
+#include "ash/aura/wm_window_aura.h"
+#include "ash/common/test/ash_test.h"
+#include "ash/display/display_manager.h"
+#include "ash/screen_util.h"
+#include "ash/shell.h"
+#include "ash/test/ash_test_base.h"
+#include "ash/test/display_manager_test_api.h"
+#include "base/memory/ptr_util.h"
+#include "ui/display/manager/display_layout.h"
+#include "ui/display/screen.h"
+
+namespace ash {
+namespace {
+
+// AshTestBase is abstract as TestBody() is pure virtual (the various TEST
+// macros have the implementation). In order to create AshTestBase we have to
+// subclass with an empty implementation of TestBody(). That's ok as the class
+// isn't used as a normal test here.
+class AshTestBaseImpl : public test::AshTestBase {
+ public:
+  AshTestBaseImpl() {}
+  ~AshTestBaseImpl() override {}
+
+  // AshTestBase:
+  void TestBody() override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AshTestBaseImpl);
+};
+
+}  // namespace
+
+AshTestImplAura::AshTestImplAura()
+    : ash_test_base_(base::MakeUnique<AshTestBaseImpl>()) {}
+
+AshTestImplAura::~AshTestImplAura() {}
+
+void AshTestImplAura::SetUp() {
+  ash_test_base_->SetUp();
+}
+
+void AshTestImplAura::TearDown() {
+  ash_test_base_->TearDown();
+}
+
+bool AshTestImplAura::SupportsMultipleDisplays() const {
+  return ash_test_base_->SupportsMultipleDisplays();
+}
+
+void AshTestImplAura::UpdateDisplay(const std::string& display_spec) {
+  ash_test_base_->UpdateDisplay(display_spec);
+}
+
+std::unique_ptr<WindowOwner> AshTestImplAura::CreateTestWindow(
+    const gfx::Rect& bounds_in_screen,
+    ui::wm::WindowType type,
+    int shell_window_id) {
+  return base::MakeUnique<WindowOwner>(WmWindowAura::Get(
+      ash_test_base_->CreateTestWindowInShellWithDelegateAndType(
+          nullptr, type, shell_window_id, bounds_in_screen)));
+}
+
+display::Display AshTestImplAura::GetSecondaryDisplay() {
+  return ScreenUtil::GetSecondaryDisplay();
+}
+
+bool AshTestImplAura::SetSecondaryDisplayPlacement(
+    display::DisplayPlacement::Position position,
+    int offset) {
+  Shell::GetInstance()->display_manager()->SetLayoutForCurrentDisplays(
+      test::CreateDisplayLayout(position, 0));
+  return true;
+}
+
+// static
+std::unique_ptr<AshTestImpl> AshTestImpl::Create() {
+  return base::MakeUnique<AshTestImplAura>();
+}
+
+}  // namespace ash