X11: Use better visuals for OpenGL

gpu/config/gpu_info.h

Index: gpu/config/gpu_info.h
diff --git a/gpu/config/gpu_info.h b/gpu/config/gpu_info.h
index fe1b7da4ce1abd4bf03b2db0caef0c8df2fbc18e..fbb6aac4de9b6dcc03b00e2fcfdea9d9265468c1 100644
--- a/gpu/config/gpu_info.h
+++ b/gpu/config/gpu_info.h
@@ -20,6 +20,10 @@
 #include "gpu/gpu_export.h"
 #include "ui/gfx/geometry/size.h"
 
+#if defined(USE_X11) && !defined(OS_CHROMEOS)
+typedef unsigned long VisualID;
+#endif
+
 namespace gpu {
 
 // Result for the various Collect*Info* functions below.
@@ -236,6 +240,11 @@ struct GPU_EXPORT GPUInfo {
       video_encode_accelerator_supported_profiles;
   bool jpeg_decode_accelerator_supported;
 
+#if defined(USE_X11) && !defined(OS_CHROMEOS)
+  VisualID system_visual;
+  VisualID rgba_visual;
+#endif
+
   // Note: when adding new members, please remember to update EnumerateFields
   // in gpu_info.cc.