Fix EGL configs with GLSurfaceOzoneSurfaceless.

ui/ozone/platform/x11/x11_surface_factory.cc

 // Copyright 2016 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/ozone/platform/x11/x11_surface_factory.h"
 
 #include <X11/Xlib.h>
 
 #include "base/macros.h"
 #include "third_party/khronos/EGL/egl.h"
@@ skipping 50 matching lines @@
                              8,
                              EGL_BLUE_SIZE,
                              8,
                              EGL_GREEN_SIZE,
                              8,
                              EGL_RED_SIZE,
                              8,
                              EGL_RENDERABLE_TYPE,
                              EGL_OPENGL_ES2_BIT,
                              EGL_SURFACE_TYPE,
-                             EGL_WINDOW_BIT,
+                             EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
                              EGL_NONE};
 
   // Get the depth of XWindow for surface
   XWindowAttributes win_attribs;
   if (XGetWindowAttributes(gfx::GetXDisplay(), widget_, &win_attribs)) {
     config_attribs[kBufferSizeOffset] = win_attribs.depth;
   }
 
   EGLint num_configs;
   if (!egl.choose_config.Run(config_attribs, &config, 1, &num_configs)) {
@@ skipping 37 matching lines @@
     gfx::AcceleratedWidget widget) {
   return make_scoped_ptr(new X11SurfaceEGL(widget));
 }
 
 bool X11SurfaceFactory::LoadEGLGLES2Bindings(
     AddGLLibraryCallback add_gl_library,
     SetGLGetProcAddressProcCallback set_gl_get_proc_address) {
   return LoadDefaultEGLGLES2Bindings(add_gl_library, set_gl_get_proc_address);
 }
 
+const int32_t* X11SurfaceFactory::GetEGLSurfaceProperties(
+    const int32_t* desired_list) {
+  static const EGLint kConfigAttribs[] = {EGL_BUFFER_SIZE,
+                                          32,
+                                          EGL_ALPHA_SIZE,
+                                          8,
+                                          EGL_BLUE_SIZE,
+                                          8,
+                                          EGL_GREEN_SIZE,
+                                          8,
+                                          EGL_RED_SIZE,
+                                          8,
+                                          EGL_RENDERABLE_TYPE,
+                                          EGL_OPENGL_ES2_BIT,
+                                          EGL_SURFACE_TYPE,
+                                          EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
+                                          EGL_NONE};
+  return kConfigAttribs;
+}
+
 intptr_t X11SurfaceFactory::GetNativeDisplay() {
   return reinterpret_cast<intptr_t>(gfx::GetXDisplay());
 }
 
 }  // namespace ui