X11: Use better visuals for OpenGL

ui/gl/gl_context.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.
 
 #include "ui/gl/gl_context.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/cancelable_callback.h"
@@ skipping 31 matching lines @@
 
 void GLContext::ScopedReleaseCurrent::Cancel() {
   canceled_ = true;
 }
 
 GLContext::GLContext(GLShareGroup* share_group)
     : share_group_(share_group),
       current_virtual_context_(nullptr),
       state_dirtied_externally_(false),
       swap_interval_(1),
-      force_swap_interval_zero_(false) {
+      force_swap_interval_zero_(false),
+      weak_factory_(this) {
   if (!share_group_.get())
-    share_group_ = new GLShareGroup;
+    share_group_ = gl::CreateGLShareGroup();
 
   share_group_->AddContext(this);
 }
 
 GLContext::~GLContext() {
   share_group_->RemoveContext(this);
   if (GetCurrent() == this) {
     SetCurrent(nullptr);
   }
 }
@@ skipping 208 matching lines @@
 
 scoped_refptr<GLContext> InitializeGLContext(scoped_refptr<GLContext> context,
                                              GLSurface* compatible_surface,
                                              GpuPreference gpu_preference) {
   if (!context->Initialize(compatible_surface, gpu_preference))
     return nullptr;
   return context;
 }
 
 }  // namespace gl