Convert all usages of mojo::ErrorHandler in //device/serial to callbacks.

device/serial/data_sender.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "device/serial/data_sender.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 34 matching lines @@
   // The DataSender that owns this PendingSend.
   DataSender* sender_;
 };
 
 DataSender::DataSender(mojo::InterfacePtr<serial::DataSink> sink,
                        uint32_t buffer_size,
                        int32_t fatal_error_value)
     : sink_(sink.Pass()),
       fatal_error_value_(fatal_error_value),
       shut_down_(false) {
-  sink_.set_error_handler(this);
+  sink_.set_connection_error_handler(
+      base::Bind(&DataSender::OnConnectionError, base::Unretained(this)));
 }
 
 DataSender::~DataSender() {
   ShutDown();
 }
 
 bool DataSender::Send(const base::StringPiece& data,
                       const DataSentCallback& callback,
                       const SendErrorCallback& error_callback) {
   DCHECK(!callback.is_null() && !error_callback.is_null());
@@ skipping 97 matching lines @@
 void DataSender::PendingSend::SendData() {
   uint32_t num_bytes_to_send = static_cast<uint32_t>(data_.size());
   mojo::Array<uint8_t> bytes(num_bytes_to_send);
   memcpy(&bytes[0], data_.data(), num_bytes_to_send);
   sender_->sink_->OnData(
       bytes.Pass(),
       base::Bind(&DataSender::PendingSend::OnDataSent, base::Unretained(this)));
 }
 
 }  // namespace device