Share X connection between GLSurfaceGLX/EGL and MessagePumpX/GTK

ui/gfx/gl/gl_surface_linux.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_surface.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
 #if !defined(USE_WAYLAND)
 #include "third_party/mesa/MesaLib/include/GL/osmesa.h"
 #endif
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_implementation.h"
 #include "ui/gfx/gl/gl_surface_egl.h"
 #if !defined(USE_WAYLAND)
 #include "ui/gfx/gl/gl_surface_glx.h"
 #include "ui/gfx/gl/gl_surface_osmesa.h"
 #endif
@@ skipping 82 matching lines @@
 
 NativeViewGLSurfaceOSMesa::~NativeViewGLSurfaceOSMesa() {
   Destroy();
 }
 
 bool NativeViewGLSurfaceOSMesa::InitializeOneOff() {
   static bool initialized = false;
   if (initialized)
     return true;
 
-  g_osmesa_display = XOpenDisplay(NULL);
+  g_osmesa_display = base::MessagePumpForUI::GetDefaultXDisplay();
   if (!g_osmesa_display) {
     LOG(ERROR) << "XOpenDisplay failed.";
     return false;
   }
 
   initialized = true;
   return true;
 }
 
 bool NativeViewGLSurfaceOSMesa::Initialize() {
@@ skipping 252 matching lines @@
     }
     case kGLImplementationMockGL:
       return new GLSurfaceStub;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace gfx