In chromedriver, add /log url

chrome/test/automation/automation_json_requests.cc

 // Copyright (c) 2011 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 "chrome/test/automation/automation_json_requests.h"
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/format_macros.h"
 #include "base/json/json_reader.h"
@@ skipping 11 matching lines @@
 
 bool SendAutomationJSONRequest(AutomationMessageSender* sender,
                                const DictionaryValue& request_dict,
                                DictionaryValue* reply_dict,
                                std::string* error_msg) {
   std::string request, reply;
   base::JSONWriter::Write(&request_dict, false, &request);
   bool success = false;
   int timeout_ms = TestTimeouts::action_max_timeout_ms();
   base::Time before_sending = base::Time::Now();
+  std::string command;
+  request_dict.GetString("command", &command);
+  LOG(INFO) << "Sending '" << command << "' command.";
   if (!SendAutomationJSONRequest(
           sender, request, timeout_ms, &reply, &success)) {
     int64 elapsed_ms = (base::Time::Now() - before_sending).InMilliseconds();
-    std::string command;
-    request_dict.GetString("command", &command);
     if (elapsed_ms >= timeout_ms) {
       *error_msg = base::StringPrintf(
           "Chrome did not respond to '%s'. Request may have timed out. "
               "Elapsed time was %" PRId64 " ms. Request timeout was %d ms. "
               "Request details: (%s).",
           command.c_str(),
           elapsed_ms,
           timeout_ms,
           request.c_str());
     } else {
       *error_msg = base::StringPrintf(
           "Chrome did not respond to '%s'. Elapsed time was %" PRId64 " ms. "
               "Request details: (%s).",
           command.c_str(),
           elapsed_ms,
           request.c_str());
     }
     return false;
   }
   scoped_ptr<Value> value(base::JSONReader::Read(reply, true));
   if (!value.get() || !value->IsType(Value::TYPE_DICTIONARY)) {
-    std::string command;
-    request_dict.GetString("command", &command);
     LOG(ERROR) << "JSON request did not return dict: " << command << "\n";
     return false;
   }
   DictionaryValue* dict = static_cast<DictionaryValue*>(value.get());
   if (!success) {
-    std::string command, error;
-    request_dict.GetString("command", &command);
+    std::string error;
     dict->GetString("error", &error);
     *error_msg = base::StringPrintf(
         "Internal Chrome error during '%s': (%s). Request details: (%s).",
         command.c_str(),
         error.c_str(),
         request.c_str());
     LOG(ERROR) << "JSON request failed: " << command << "\n"
                << "    with error: " << error;
     return false;
   }
@@ skipping 551 matching lines @@
     AutomationMessageSender* sender,
     int* version,
     std::string* error_msg) {
   DictionaryValue dict;
   dict.SetString("command", "GetChromeDriverAutomationVersion");
   DictionaryValue reply_dict;
   if (!SendAutomationJSONRequest(sender, dict, &reply_dict, error_msg))
     return false;
   return reply_dict.GetInteger("version", version);
 }