gpu: Add support for GLX_EXT_texture_from_pixmap extension.

ui/gl/gl_image_stub.cc

Index: ui/gl/gl_image_stub.cc
diff --git a/ui/gl/gl_image_stub.cc b/ui/gl/gl_image_stub.cc
new file mode 100644
index 0000000000000000000000000000000000000000..21277e8589171f793c747c9e4bcbd512fc462eae
--- /dev/null
+++ b/ui/gl/gl_image_stub.cc
@@ -0,0 +1,22 @@
+// 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_image_stub.h"
+
+namespace gfx {
+
+void GLImageStub::Destroy() {
+}
+
+gfx::Size GLImageStub::GetSize() {
+  return gfx::Size(1, 1);
+}
+
+bool GLImageStub::RebindPixmap(GLuint pixmap) {
+  return true;
+}
+
+GLImageStub::~GLImageStub() {}
+
+}  // namespace gfx