[battor agent] Fix the init sequence so it retries inits instead of resets.

tools/battor_agent/battor_connection_impl.cc

 // Copyright 2015 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 "tools/battor_agent/battor_connection_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
@@ skipping 153 matching lines @@
         FROM_HERE,
         base::Bind(&Listener::OnMessageRead, base::Unretained(listener_), true,
                    parsed_type, base::Passed(std::move(bytes))));
     return;
   }
 
   LogSerial("No complete message found.");
   BeginReadBytes(max_bytes_to_read - already_read_buffer_.size());
 }
 
+void BattOrConnectionImpl::CancelReadMessage() {
+  io_handler_->CancelRead(device::serial::ReceiveError::NONE);

[charliea (OOO until 10-5), 2016/05/23 14:08:52]

Think it might be more accurate to cancel it w/ ReceiveError=TIMEOUT here

[aschulman, 2016/06/10 07:22:59]

Done.

+}
+
 void BattOrConnectionImpl::Flush() {
   io_handler_->Flush();
   already_read_buffer_.clear();
 }
 
 scoped_refptr<device::SerialIoHandler> BattOrConnectionImpl::CreateIoHandler() {
   return device::SerialIoHandler::Create(file_thread_task_runner_,
                                          ui_thread_task_runner_);
 }
 
@@ skipping 129 matching lines @@
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&Listener::OnBytesSent, base::Unretained(listener_), success));
 }
 
 void BattOrConnectionImpl::LogSerial(const std::string& str) {
   serial_log_ << str << std::endl << std::endl;
 }
 
 }  // namespace battor