Split GL binding init into core and extension part

ui/gfx/gl/gl_context_egl.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.
 
 #include "ui/gfx/gl/gl_context_egl.h"
 
 #include "build/build_config.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "third_party/angle/include/EGL/egl.h"
@@ skipping 79 matching lines @@
   if (!eglMakeCurrent(display_,
                       surface->GetHandle(),
                       surface->GetHandle(),
                       context_)) {
     VLOG(1) << "eglMakeCurrent failed with error "
             << GetLastEGLErrorString();
     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 GLContextEGL::ReleaseCurrent(GLSurface* surface) {
   if (!IsCurrent(surface))
@@ skipping 33 matching lines @@
 
 void GLContextEGL::SetSwapInterval(int interval) {
   DCHECK(IsCurrent(NULL));
   if (!eglSwapInterval(display_, interval)) {
     LOG(ERROR) << "eglSwapInterval failed with error "
                << GetLastEGLErrorString();
   }
 }
 
 }  // namespace gfx