Split out Ash dependency in app info dialog unittests

ui/views/test/scoped_views_test_helper.cc

+// Copyright 2015 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 "ui/views/test/scoped_views_test_helper.h"
+
+#include "base/message_loop/message_loop.h"
+#include "ui/base/ime/input_method_initializer.h"
+#include "ui/compositor/test/context_factories_for_test.h"
+#include "ui/views/test/test_views_delegate.h"
+#include "ui/views/test/views_test_helper.h"
+
+namespace views {
+
+ScopedViewsTestHelper::ScopedViewsTestHelper()
+    : ScopedViewsTestHelper(make_scoped_ptr(new TestViewsDelegate)) {
+}
+
+ScopedViewsTestHelper::ScopedViewsTestHelper(
+    scoped_ptr<TestViewsDelegate> views_delegate)
+    : views_delegate_(views_delegate.Pass()) {
+  // The ContextFactory must exist before any Compositors are created.
+  bool enable_pixel_output = false;
+  ui::ContextFactory* context_factory =
+      ui::InitializeContextFactoryForTests(enable_pixel_output);
+  views_delegate_->set_context_factory(context_factory);
+
+  test_helper_.reset(ViewsTestHelper::Create(base::MessageLoopForUI::current(),
+                                             context_factory));
+  test_helper_->SetUp();
+
+  ui::InitializeInputMethodForTesting();
+}
+
+ScopedViewsTestHelper::~ScopedViewsTestHelper() {
+  ui::ShutdownInputMethodForTesting();
+  test_helper_->TearDown();
+  test_helper_.reset();
+
+  ui::TerminateContextFactoryForTests();
+  views_delegate_.reset();
+}
+
+gfx::NativeWindow ScopedViewsTestHelper::GetContext() {
+  return test_helper_->GetContext();
+}
+
+}  // namespace views