Rename "test" ozone platform to "headless"

ui/ozone/platform/eglheadless/BUILD.gn

Index: ui/ozone/platform/eglheadless/BUILD.gn
diff --git a/ui/ozone/platform/egltest/BUILD.gn b/ui/ozone/platform/eglheadless/BUILD.gn
similarity index 80%
rename from ui/ozone/platform/egltest/BUILD.gn
rename to ui/ozone/platform/eglheadless/BUILD.gn
index dacb8edc3c60086a7fa333170cf926be6571ac9a..38a45ce8155f1e3f8eeca7b23d0c483dd396078a 100644
--- a/ui/ozone/platform/egltest/BUILD.gn
+++ b/ui/ozone/platform/eglheadless/BUILD.gn
@@ -5,12 +5,12 @@
 import("//tools/generate_library_loader/generate_library_loader.gni")
 import("//ui/ozone/ozone.gni")
 
-source_set("egltest") {
+source_set("eglheadless") {
   sources = [
-    "client_native_pixmap_factory_egltest.cc",
-    "client_native_pixmap_factory_egltest.h",
-    "ozone_platform_egltest.cc",
-    "ozone_platform_egltest.h",
+    "client_native_pixmap_factory_eglheadless.cc",
+    "client_native_pixmap_factory_eglheadless.h",
+    "ozone_platform_eglheadless.cc",
+    "ozone_platform_eglheadless.h",
   ]
 
   deps = [
@@ -28,7 +28,7 @@ generate_library_loader("eglplatform_shim") {
   name = "LibeglplatformShimLoader"
   output_h = "libeglplatform_shim.h"
   output_cc = "libeglplatform_shim_loader.cc"
-  header = "\"ui/ozone/platform/egltest/eglplatform_shim.h\""
+  header = "\"ui/ozone/platform/eglheadless/eglplatform_shim.h\""
 
   functions = [
     "ShimQueryString",
@@ -47,7 +47,7 @@ generate_library_loader("eglplatform_shim") {
 # support lands: http://crbug.com/380327. Until then, it is not valid on
 # platforms other than Linux.
 
-# GYP version: "ui/ozone/platform/egltest/egltest.gypi:eglplatform_shim_x11"
+# GYP version: "ui/ozone/platform/eglheadless/eglheadless.gypi:eglplatform_shim_x11"
 if (is_linux && ozone_platform_ozonex) {
   shared_library("eglplatform_shim_x11") {
     output_name = "libeglplatform_shim"