It is time.

ui/gl/BUILD.gn

 # 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/ui.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 216 matching lines @@
 
     defines += [
       "GL_GLEXT_PROTOTYPES",
       "EGL_EGLEXT_PROTOTYPES",
     ]
 
     libs = [ "android" ]
 
     deps += [ ":gl_jni_headers" ]
   }
-  if (use_ozone) {
-    sources += [
-      "gl_context_ozone.cc",
-      "gl_egl_api_implementation.cc",
-      "gl_egl_api_implementation.h",
-      "gl_implementation_ozone.cc",
-      "gl_surface_ozone.cc",
-    ]
-    deps += [
-      "//ui/ozone",
-      "//ui/ozone:ozone_base",
-    ]
-  }
 
   if (is_android && !is_android_webview_build) {
     deps += [ "//ui/android:ui_java" ]
   }
 }
 
 action("generate_gl_bindings") {
   visibility = [ ":*" ]  # Only targets in this file can see this.
 
   script = "generate_bindings.py"
@@ skipping 79 matching lines @@
     deps = [
       ":surface_jni_headers",
     ]
     sources = [
       "../android/java/src/org/chromium/ui/gl/SurfaceTextureListener.java",
       "../android/java/src/org/chromium/ui/gl/SurfaceTexturePlatformWrapper.java",
     ]
     jni_package = "ui/gl"
   }
 }