Rename "test" ozone platform to "headless"

ui/ozone/platform/test/test_window_manager.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 "ui/ozone/platform/test/test_window_manager.h"
-
-#include "base/files/file_util.h"
-#include "base/location.h"
-
-namespace ui {
-
-TestWindowManager::TestWindowManager(const base::FilePath& dump_location)
-    : location_(dump_location) {
-}
-
-TestWindowManager::~TestWindowManager() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-}
-
-void TestWindowManager::Initialize() {
-  if (location_.empty())
-    return;
-  if (!DirectoryExists(location_) && !base::CreateDirectory(location_) &&
-      location_ != base::FilePath("/dev/null"))
-    PLOG(FATAL) << "unable to create output directory";
-  if (!base::PathIsWritable(location_))
-    PLOG(FATAL) << "unable to write to output location";
-}
-
-int32_t TestWindowManager::AddWindow(TestWindow* window) {
-  return windows_.Add(window);
-}
-
-void TestWindowManager::RemoveWindow(int32_t window_id, TestWindow* window) {
-  DCHECK_EQ(window, windows_.Lookup(window_id));
-  windows_.Remove(window_id);
-}
-
-TestWindow* TestWindowManager::GetWindow(int32_t window_id) {
-  return windows_.Lookup(window_id);
-}
-
-base::FilePath TestWindowManager::base_path() const {
-  return location_;
-}
-
-}  // namespace ui