ChannelProxy: Send() from UI thread when ChannelMojo is used.

ipc/mojo/ipc_message_pipe_reader.cc

Index: ipc/mojo/ipc_message_pipe_reader.cc
diff --git a/ipc/mojo/ipc_message_pipe_reader.cc b/ipc/mojo/ipc_message_pipe_reader.cc
index 36871e76caed8f7c6f04f0a3c4b24c417ea3ae50..fc9775f5581157c76e43fd174eccac31e3fd4f70 100644
--- a/ipc/mojo/ipc_message_pipe_reader.cc
+++ b/ipc/mojo/ipc_message_pipe_reader.cc
@@ -38,7 +38,7 @@ void MessagePipeReader::CloseWithError(MojoResult error) {
   Close();
 }
 
-bool MessagePipeReader::Send(scoped_ptr<Message> message) {
+MojoResult MessagePipeReader::Send(scoped_ptr<Message> message) {
   DCHECK(IsValid());
 
   message->TraceMessageBegin();
@@ -56,13 +56,9 @@ bool MessagePipeReader::Send(scoped_ptr<Message> message) {
                               MOJO_WRITE_MESSAGE_FLAG_NONE);
   }
 
-  if (result != MOJO_RESULT_OK) {
+  if (result != MOJO_RESULT_OK)
     std::for_each(handles.begin(), handles.end(), &MojoClose);
-    CloseWithError(result);
-    return false;
-  }
-
-  return true;
+  return result;
 }
 
 // static