[BattOr] Retry battor_agent commands when they fail.

tools/battor_agent/battor_error.cc

 // Copyright 2016 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_error.h"
 
 #include "base/logging.h"
 
 namespace battor {
 
 std::string BattOrErrorToString(BattOrError error) {
   switch (error) {
     case BATTOR_ERROR_NONE:
       return "NONE";
     case BATTOR_ERROR_CONNECTION_FAILED:
       return "CONNECTION FAILED";
     case BATTOR_ERROR_TIMEOUT:
       return "TIMEOUT";
     case BATTOR_ERROR_SEND_ERROR:
       return "SEND ERROR";
     case BATTOR_ERROR_RECEIVE_ERROR:
       return "RECEIVE ERROR";
     case BATTOR_ERROR_UNEXPECTED_MESSAGE:
       return "UNEXPECTED MESSAGE";
-    case BATTOR_ERROR_TOO_MANY_INIT_RETRIES:
-      return "TOO MANY INIT RETRIES";
-    case BATTOR_ERROR_TOO_MANY_START_TRACING_RETRIES:
-      return "TOO MANY START_TRACING RETRIES";
+    case BATTOR_ERROR_TOO_MANY_COMMAND_RETRIES:
+      return "TOO MANY COMMAND RETRIES";
   }
 
   NOTREACHED();
   return std::string();
 }
 
 }  // namespace battor