Split GL binding init into core and extension part

ui/gfx/gl/gl_context_wgl.cc

 // Copyright (c) 2011 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.
 
 // This file implements the GLContextWGL and PbufferGLContext classes.
 
 #include "ui/gfx/gl/gl_context_wgl.h"
 
 #include "base/logging.h"
 #include "ui/gfx/gl/gl_bindings.h"
@@ skipping 65 matching lines @@
   DCHECK(context_);
   if (IsCurrent(surface))
     return true;
 
   if (!wglMakeCurrent(static_cast<HDC>(surface->GetHandle()), context_)) {
     LOG(ERROR) << "Unable to make gl context current.";
     return false;
   }
 
   SetCurrent(this, surface);
+  if (!InitializeExtensionBindings()) {
+    ReleaseCurrent(surface);
+    return false;
+  }
+
   if (!surface->OnMakeCurrent(this)) {
     LOG(ERROR) << "Could not make current.";
     return false;
   }
 
   return true;
 }
 
 void GLContextWGL::ReleaseCurrent(GLSurface* surface) {
   if (!IsCurrent(surface))
@@ skipping 32 matching lines @@
   if (HasExtension("WGL_EXT_swap_control") && wglSwapIntervalEXT) {
     wglSwapIntervalEXT(interval);
   } else {
       LOG(WARNING) <<
           "Could not disable vsync: driver does not "
           "support WGL_EXT_swap_control";
   }
 }
 
 }  // namespace gfx