Revert 93237 - Implement AsyncHostResolver, an asynchronous HostResolver.

BUG=60149
TEST=net_unittests --gtest_filter="AsyncHostResolverTest*"

Review URL: http://codereview.chromium.org/7342046

TBR=agayev@chromium.org
Review URL: http://codereview.chromium.org/7466010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@93240 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 18 deletions

diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index 35070e19..11d8827 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -34,7 +34,6 @@
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/in_process_webkit/indexed_db_key_utility_client.h"
 #include "content/common/url_fetcher.h"
-#include "net/base/async_host_resolver.h"
 #include "net/base/cert_verifier.h"
 #include "net/base/cookie_monster.h"
 #include "net/base/dnsrr_resolver.h"
@@ -161,24 +160,8 @@ net::HostResolver* CreateGlobalHostResolver(net::NetLog* net_log) {
     }
   }
 
-  net::HostResolver* global_host_resolver = NULL;
-  if (command_line.HasSwitch(switches::kDnsServer)) {
-    std::string dns_ip_string =
-      command_line.GetSwitchValueASCII(switches::kDnsServer);
-    net::IPAddressNumber dns_ip_number;
-    if (net::ParseIPLiteralToNumber(dns_ip_string, &dns_ip_number)) {
-      global_host_resolver =
-        net::CreateAsyncHostResolver(parallelism, dns_ip_number, net_log);
-    } else {
-      LOG(ERROR) << "Invalid IP address specified for --dns-server: "
-                 << dns_ip_string;
-    }
-  }
-
-  if (!global_host_resolver) {
-    global_host_resolver =
+  net::HostResolver* global_host_resolver =
       net::CreateSystemHostResolver(parallelism, retry_attempts, net_log);
-  }
 
   // Determine if we should disable IPv6 support.
   if (!command_line.HasSwitch(switches::kEnableIPv6)) {