Revert "Revert 164047 - Make GL calls go through subclassable class."

This reverts commit 25afcfe213ffd88f8e9370d4ff1ee23ecf9ae16c.

BUG=155557
[email protected]

Review URL: https://codereview.chromium.org/11264041

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@164095 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ui/gl/gl_glx_api_implementation.cc b/ui/gl/gl_glx_api_implementation.cc
new file mode 100644
index 0000000..9897119
--- /dev/null
+++ b/ui/gl/gl_glx_api_implementation.cc
@@ -0,0 +1,52 @@
+// 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_glx_api_implementation.h"
+
+namespace gfx {
+
+RealGLXApi* g_real_glx;
+
+void InitializeGLBindingsGLX() {
+  g_driver_glx.InitializeBindings();
+  if (!g_real_glx) {
+    g_real_glx = new RealGLXApi();
+  }
+  g_real_glx->Initialize(&g_driver_glx);
+  g_current_glx_context = g_real_glx;
+}
+
+void InitializeGLExtensionBindingsGLX(GLContext* context) {
+  g_driver_glx.InitializeExtensionBindings(context);
+}
+
+void InitializeDebugGLBindingsGLX() {
+  g_driver_glx.InitializeDebugBindings();
+}
+
+void ClearGLBindingsGLX() {
+  if (g_real_glx) {
+    delete g_real_glx;
+    g_real_glx = NULL;
+  }
+  g_current_glx_context = NULL;
+  g_driver_glx.ClearBindings();
+}
+
+GLXApi::GLXApi() {
+}
+
+GLXApi::~GLXApi() {
+}
+
+RealGLXApi::RealGLXApi() {
+}
+
+void RealGLXApi::Initialize(DriverGLX* driver) {
+  driver_ = driver;
+}
+
+}  // namespace gfx
+
+