Reland: Added a debug info UI for Blimp

blimp/net/blimp_connection.cc

Index: blimp/net/blimp_connection.cc
diff --git a/blimp/net/blimp_connection.cc b/blimp/net/blimp_connection.cc
index 9e8cd6ae7c8216da9d64d86764c3bd98739251b3..7b79a5f3f9dc229258372d0fee0bea972600a23f 100644
--- a/blimp/net/blimp_connection.cc
+++ b/blimp/net/blimp_connection.cc
@@ -20,7 +20,6 @@
 #include "net/base/completion_callback.h"
 
 namespace blimp {
-namespace {
 
 // Forwards incoming blimp messages to PacketWriter.
 class BlimpMessageSender : public BlimpMessageProcessor {
@@ -106,8 +105,6 @@ void BlimpMessageSender::OnWritePacketComplete(int result) {
   process_callback.Run(result);
 }
 
-}  // namespace
-
 BlimpConnection::BlimpConnection(std::unique_ptr<PacketReader> reader,
                                  std::unique_ptr<PacketWriter> writer)
     : reader_(std::move(reader)),
@@ -118,9 +115,7 @@ BlimpConnection::BlimpConnection(std::unique_ptr<PacketReader> reader,
   DCHECK(reader_);
 
   message_pump_->set_error_observer(this);
-  BlimpMessageSender* sender =
-      static_cast<BlimpMessageSender*>(outgoing_msg_processor_.get());
-  sender->set_error_observer(this);
+  outgoing_msg_processor_->set_error_observer(this);
 }
 
 BlimpConnection::BlimpConnection() {}