MacViews: Split ViewEventTestBase into platform-specific files.

chrome/test/base/view_event_test_platform_part_ash.cc

+// Copyright 2014 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 "chrome/test/base/view_event_test_platform_part.h"
+
+#include "ui/aura/env.h"
+#include "ui/gfx/screen.h"
+#include "ui/views/widget/desktop_aura/desktop_screen.h"
+#include "ui/wm/core/wm_state.h"
+
+namespace {
+
+// ChromeViewsTestHelper implementation for non-ChromeOS environments, where the
+// Ash desktop environment is available (use_ash=1, chromeos=0).
+class ViewEventTestPlatformPartAsh : public ViewEventTestPlatformPart {
+ public:
+  explicit ViewEventTestPlatformPartAsh(ui::ContextFactory* context_factory);
+  virtual ~ViewEventTestPlatformPartAsh();
+
+  // Overridden from ViewEventTestPlatformPart:
+  virtual gfx::NativeWindow GetContext() OVERRIDE {
+    return NULL;  // No context, so that desktop tree hosts are used by default.
+  }
+
+ private:
+  wm::WMState wm_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewEventTestPlatformPartAsh);
+};
+
+ViewEventTestPlatformPartAsh::ViewEventTestPlatformPartAsh(
+    ui::ContextFactory* context_factory) {
+  // http://crbug.com/154081 use ash::Shell code path below on win_ash bots when
+  // interactive_ui_tests is brought up on that platform.
+  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
+                                 views::CreateDesktopScreen());
+  aura::Env::CreateInstance(true);
+  aura::Env::GetInstance()->set_context_factory(context_factory);
+}
+
+ViewEventTestPlatformPartAsh::~ViewEventTestPlatformPartAsh() {
+  aura::Env::DeleteInstance();
+}
+
+}  // namespace
+
+// static
+ViewEventTestPlatformPart* ViewEventTestPlatformPart::Create(
+    ui::ContextFactory* context_factory) {
+  return new ViewEventTestPlatformPartAsh(context_factory);
+}