content: Pass surfacelessness of GL context from GPU to browser

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 174b787b01947d3db9324e543e8b09a2ddf7fdbd..7db0d5c336e5f5060cbb9e14b534d67f5cc8f323 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -3145,6 +3145,7 @@ Capabilities GLES2DecoderImpl::GetCapabilities() {
 
   caps.post_sub_buffer = supports_post_sub_buffer_;
   caps.image = true;
+  caps.surfaceless = surfaceless_;
 
   caps.blend_equation_advanced =
       feature_info_->feature_flags().blend_equation_advanced;