Delete Ozone egltest platform.

ui/ozone/ozone.gni

 # 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.
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/ui.gni")
 
 declare_args() {
   # Select platforms automatically. Turn this off for manual control.
   ozone_auto_platforms = use_ozone
 
   # This enables memory-mapped access to accelerated graphics buffers via the
   # VGEM ("virtual GEM") driver. This is currently only available on Chrome OS
   # kernels and affects code in the GBM ozone platform.
   # TODO(dshwang): remove this flag when all gbm hardware supports vgem map.
   # crbug.com/519587
   use_vgem_map = false
 }
 
 declare_args() {
   # The platform that will be active by default.
   ozone_platform = ""
 
   # Enable individual platforms.
   ozone_platform_caca = false
   ozone_platform_cast = false
-  ozone_platform_egltest = false
   ozone_platform_gbm = false
-  ozone_platform_ozonex = false
   ozone_platform_headless = false
   ozone_platform_x11 = false
   ozone_platform_wayland = false
 
   if (ozone_auto_platforms) {
     # Use headless as the default platform.
     ozone_platform = "headless"
     ozone_platform_headless = true
 
     if (is_chromecast) {
@@ skipping 14 matching lines @@
       ozone_platform_x11 = true
     } else {
       # Build all platforms whose deps are in install-build-deps.sh.
       # Only these platforms will be compile tested by buildbots.
       ozone_platform_x11 = true
     }
   }
 }
 
 assert(use_ozone || !(ozone_platform_caca || ozone_platform_cast ||
-                          ozone_platform_egltest || ozone_platform_gbm ||
-                          ozone_platform_ozonex || ozone_platform_headless),
+                          ozone_platform_gbm || ozone_platform_headless ||
+                          ozone_platform_x11 || ozone_platform_wayland),
        "Must set use_ozone to select ozone platforms")