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

tools/battor_agent/battor_connection_impl.h

 // 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.
 
 #ifndef TOOLS_BATTOR_AGENT_BATTOR_CONNECTION_IMPL_H_
 #define TOOLS_BATTOR_AGENT_BATTOR_CONNECTION_IMPL_H_
 
 #include <fstream>
 #include <vector>
 
@@ skipping 26 matching lines @@
       scoped_refptr<base::SingleThreadTaskRunner> file_thread_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> ui_thread_task_runner);
   ~BattOrConnectionImpl() override;
 
   void Open() override;
   void Close() override;
   void SendBytes(BattOrMessageType type,
                  const void* buffer,
                  size_t bytes_to_send) override;
   void ReadMessage(BattOrMessageType type) override;
+  void CancelReadMessage() override;
   void Flush() override;
 
  protected:
   // Overridden by the test to use a fake serial connection.
   virtual scoped_refptr<device::SerialIoHandler> CreateIoHandler();
 
   // IO handler capable of reading and writing from the serial connection.
   scoped_refptr<device::SerialIoHandler> io_handler_;
 
  private:
@@ skipping 41 matching lines @@
   scoped_refptr<base::SingleThreadTaskRunner> ui_thread_task_runner_;
 
   std::fstream serial_log_;
 
   DISALLOW_COPY_AND_ASSIGN(BattOrConnectionImpl);
 };
 
 }  // namespace battor
 
 #endif  // TOOLS_BATTOR_AGENT_BATTOR_CONNECTION_IMPL_H_