Make aura_demo work on Mac

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index 32f48d33bd0fc8d6ad06d80081706b088a8b0c8e..ad6514b852532195f386241a0c2ff7366b22c198 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -401,6 +401,12 @@ void FeatureInfo::InitializeFeatures() {
     enable_render_buffer_bgra = true;
   }
 
+  // XXX - using bgra textures blows up somewhere...
+#if defined(USE_AURA) && defined(OS_MACOSX)
+  enable_texture_format_bgra8888 = false;
+  enable_render_buffer_bgra = false;
+#endif
+
   if (extensions.Contains("GL_EXT_read_format_bgra") ||
       extensions.Contains("GL_EXT_bgra")) {
     enable_read_format_bgra = true;