Rename "test" ozone platform to "headless"

ui/ozone/platform/headless/headless_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 "ui/ozone/platform/headless/headless_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) {
-}
+HeadlessWindowManager::HeadlessWindowManager(
+    const base::FilePath& dump_location)
+    : location_(dump_location) {}
 
-TestWindowManager::~TestWindowManager() {
+HeadlessWindowManager::~HeadlessWindowManager() {
   DCHECK(thread_checker_.CalledOnValidThread());
 }
 
-void TestWindowManager::Initialize() {
+void HeadlessWindowManager::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) {
+int32_t HeadlessWindowManager::AddWindow(HeadlessWindow* window) {
   return windows_.Add(window);
 }
 
-void TestWindowManager::RemoveWindow(int32_t window_id, TestWindow* window) {
+void HeadlessWindowManager::RemoveWindow(int32_t window_id,
+                                         HeadlessWindow* window) {
   DCHECK_EQ(window, windows_.Lookup(window_id));
   windows_.Remove(window_id);
 }
 
-TestWindow* TestWindowManager::GetWindow(int32_t window_id) {
+HeadlessWindow* HeadlessWindowManager::GetWindow(int32_t window_id) {
   return windows_.Lookup(window_id);
 }
 
-base::FilePath TestWindowManager::base_path() const {
+base::FilePath HeadlessWindowManager::base_path() const {
   return location_;
 }
 
 }  // namespace ui