Move GLSurface and rename source files.

ui/gl/gl_surface_egl_ozone.cc

Index: ui/gl/gl_surface_egl_ozone.cc
diff --git a/ui/gl/gl_surface_egl_ozone.cc b/ui/gl/gl_surface_egl_ozone.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6ceabf14c071314890a55553854bb62bb26d289b
--- /dev/null
+++ b/ui/gl/gl_surface_egl_ozone.cc
@@ -0,0 +1,18 @@
+// Copyright 2016 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.
+
+#include "ui/gl/gl_surface_egl.h"
+
+#include "ui/ozone/public/ozone_platform.h"
+#include "ui/ozone/public/surface_factory_ozone.h"
+
+namespace gl {
+
+EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
+  return ui::OzonePlatform::GetInstance()
+      ->GetSurfaceFactoryOzone()
+      ->GetNativeDisplay();
+}
+
+}  // namespace gl