Rename "test" ozone platform to "headless"

ui/ozone/platform/headless/ozone_platform_headless.h

Index: ui/ozone/platform/headless/ozone_platform_headless.h
diff --git a/ui/ozone/platform/test/ozone_platform_test.h b/ui/ozone/platform/headless/ozone_platform_headless.h
similarity index 54%
rename from ui/ozone/platform/test/ozone_platform_test.h
rename to ui/ozone/platform/headless/ozone_platform_headless.h
index fb25fd69f557a01cbe209c3f38e3123adbf8e581..0c3e94c6462ba03d83870336920470a122acae0e 100644
--- a/ui/ozone/platform/test/ozone_platform_test.h
+++ b/ui/ozone/platform/headless/ozone_platform_headless.h
@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_OZONE_PLATFORM_TEST_OZONE_PLATFORM_TEST_H_
-#define UI_OZONE_PLATFORM_TEST_OZONE_PLATFORM_TEST_H_
+#ifndef UI_OZONE_PLATFORM_HEADLESS_OZONE_PLATFORM_HEADLESS_H_
+#define UI_OZONE_PLATFORM_HEADLESS_OZONE_PLATFORM_HEADLESS_H_
 
 namespace ui {
 
 class OzonePlatform;
 
 // Constructor hook for use in ozone_platform_list.cc
-OzonePlatform* CreateOzonePlatformTest();
+OzonePlatform* CreateOzonePlatformHeadless();
 
 }  // namespace ui
 
-#endif  // UI_OZONE_PLATFORM_TEST_OZONE_PLATFORM_TEST_H_
+#endif  // UI_OZONE_PLATFORM_HEADLESS_OZONE_PLATFORM_HEADLESS_H_