3D Compositing in <browser>, first draft.

ui/gl/gl_context_glx.cc

 // 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.
 
 extern "C" {
 #include <X11/Xlib.h>
 }
 
 #include "ui/gl/gl_context_glx.h"
 
@@ skipping 161 matching lines @@
     return false;
   }
 
   if (!surface->OnMakeCurrent(this)) {
     LOG(ERROR) << "Could not make current.";
     ReleaseCurrent(surface);
     Destroy();
     return false;
   }
 
+  DCHECK(IsCurrent(surface));

[Fady Samuel, 2012/07/06 15:14:44]

Is this necessary? Presumably this was used for debugging. Please remove once
you're done with it. 

   return true;
 }
 
 void GLContextGLX::ReleaseCurrent(GLSurface* surface) {
   if (!IsCurrent(surface))
     return;
 
   SetCurrent(NULL, NULL);
   if (!glXMakeCurrent(display_, 0, 0))
     LOG(ERROR) << "glXMakeCurrent failed in ReleaseCurrent";
@@ skipping 54 matching lines @@
 
 bool GLContextGLX::WasAllocatedUsingARBRobustness() {
   return GLSurfaceGLX::IsCreateContextRobustnessSupported();
 }
 
 GLContextGLX::~GLContextGLX() {
   Destroy();
 }
 
 }  // namespace gfx