Move GLSurface and rename source files.

ui/gl/gl_surface_x11.cc

Index: ui/gl/gl_surface_x11.cc
diff --git a/ui/gl/gl_surface_x11.cc b/ui/gl/gl_surface_x11.cc
deleted file mode 100644
index a3b403a535da9a806b327a0ba2b5ffb29bfe863c..0000000000000000000000000000000000000000
--- a/ui/gl/gl_surface_x11.cc
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright (c) 2012 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.h"
-
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/x/x11_types.h"
-#include "ui/gl/gl_surface_egl.h"
-
-namespace gl {
-
-EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
-  return gfx::GetXDisplay();
-}
-
-}  // namespace gl