Run the WebGL conformance tests with the passthrough command decoder.

gpu/ipc/common/gpu_info_struct_traits.cc

Index: gpu/ipc/common/gpu_info_struct_traits.cc
diff --git a/gpu/ipc/common/gpu_info_struct_traits.cc b/gpu/ipc/common/gpu_info_struct_traits.cc
index 6c2bd82051f0ff28235739bc6f3217feb650bbaf..b64e11080003c6dd765056bca2cafbcd4189b5b4 100644
--- a/gpu/ipc/common/gpu_info_struct_traits.cc
+++ b/gpu/ipc/common/gpu_info_struct_traits.cc
@@ -224,6 +224,7 @@ bool StructTraits<gpu::mojom::GpuInfoDataView, gpu::GPUInfo>::Read(
   out->direct_rendering = data.direct_rendering();
   out->sandboxed = data.sandboxed();
   out->in_process_gpu = data.in_process_gpu();
+  out->passthrough_cmd_decoder = data.passthrough_cmd_decoder();
   out->process_crash_count = data.process_crash_count();
   out->jpeg_decode_accelerator_supported =
       data.jpeg_decode_accelerator_supported();