Rename "test" ozone platform to "headless"

ui/ozone/platform/headless/client_native_pixmap_factory_headless.h

Index: ui/ozone/platform/headless/client_native_pixmap_factory_headless.h
diff --git a/ui/ozone/platform/headless/client_native_pixmap_factory_headless.h b/ui/ozone/platform/headless/client_native_pixmap_factory_headless.h
new file mode 100644
index 0000000000000000000000000000000000000000..675eec15929c0cba2014105490897a2bed42080b
--- /dev/null
+++ b/ui/ozone/platform/headless/client_native_pixmap_factory_headless.h
@@ -0,0 +1,17 @@
+// 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.
+
+#ifndef UI_OZONE_PLATFORM_HEADLESS_CLIENT_NATIVE_PIXMAP_FACTORY_HEADLESS_H_
+#define UI_OZONE_PLATFORM_HEADLESS_CLIENT_NATIVE_PIXMAP_FACTORY_HEADLESS_H_
+
+namespace ui {
+
+class ClientNativePixmapFactory;
+
+// Constructor hook for use in constructor_list.cc
+ClientNativePixmapFactory* CreateClientNativePixmapFactoryHeadless();
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_HEADLESS_CLIENT_NATIVE_PIXMAP_FACTORY_HEADLESS_H_