Add Mojo{Set,Get}DataPipeConsumerOptions() to the NaCl system thunks.

mojo/edk/embedder/system_impl_private_entrypoints.cc

Index: mojo/edk/embedder/system_impl_private_entrypoints.cc
diff --git a/mojo/edk/embedder/system_impl_private_entrypoints.cc b/mojo/edk/embedder/system_impl_private_entrypoints.cc
index 2e6d3808c5dcef4d5801cd338cbf0060f8ce6e65..0e6259961104bb72bc8965a5fec9fb39418a7100 100644
--- a/mojo/edk/embedder/system_impl_private_entrypoints.cc
+++ b/mojo/edk/embedder/system_impl_private_entrypoints.cc
@@ -193,6 +193,27 @@ MojoResult MojoSystemImplEndWriteData(MojoSystemImpl system,
   return core->EndWriteData(data_pipe_producer_handle, num_elements_written);
 }
 
+MojoResult MojoSystemImplSetDataPipeConsumerOptions(
+    MojoSystemImpl system,
+    MojoHandle data_pipe_consumer_handle,
+    const struct MojoDataPipeConsumerOptions* options) {
+  mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+  DCHECK(core);
+  return core->SetDataPipeConsumerOptions(data_pipe_consumer_handle,
+                                          MakeUserPointer(options));
+}
+
+MojoResult MojoSystemImplGetDataPipeConsumerOptions(
+    MojoSystemImpl system,
+    MojoHandle data_pipe_consumer_handle,
+    struct MojoDataPipeConsumerOptions* options,
+    uint32_t options_num_bytes) {
+  mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+  DCHECK(core);
+  return core->GetDataPipeConsumerOptions(
+      data_pipe_consumer_handle, MakeUserPointer(options), options_num_bytes);
+}
+
 MojoResult MojoSystemImplReadData(MojoSystemImpl system,
                                   MojoHandle data_pipe_consumer_handle,
                                   void* elements,