Replace some net::ERR_FAILED generic error codes with more specific codes....

net/tools/fetch/fetch_client.cc

 // Copyright (c) 2009 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 "build/build_config.h"
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
@@ skipping 32 matching lines @@
 
  private:
   int clients_;
 };
 
 // A network client
 class Client {
  public:
   Client(net::HttpTransactionFactory* factory, const std::string& url) :
       url_(url),
-      transaction_(factory->CreateTransaction()),
       buffer_(new net::IOBuffer(kBufferSize)),
       ALLOW_THIS_IN_INITIALIZER_LIST(
           connect_callback_(this, &Client::OnConnectComplete)),
       ALLOW_THIS_IN_INITIALIZER_LIST(
           read_callback_(this, &Client::OnReadComplete)) {
+    int rv = factory->CreateTransaction(&transaction_);
+    DCHECK_EQ(net::OK, rv);
     buffer_->AddRef();
     driver_->ClientStarted();
     request_info_.url = url_;
     request_info_.method = "GET";
     int state = transaction_->Start(
         &request_info_, &connect_callback_, NULL);
     DCHECK(state == net::ERR_IO_PENDING);
   };
 
  private:
@@ skipping 122 matching lines @@
       std::string name(table.GetRowName(index));
       if (name.length() > 0) {
         int value = table.GetRowValue(index);
         printf("%s:\t%d\n", name.c_str(), value);
       }
     }
     printf("</stats>\n");
   }
   return 0;
 }