Removing --host-resolver-parallelism flag.

chrome/browser/io_thread.cc

 // Copyright (c) 2012 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/browser/io_thread.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 161 matching lines @@
   }
 };
 
 scoped_ptr<net::HostResolver> CreateGlobalHostResolver(net::NetLog* net_log) {
   TRACE_EVENT0("startup", "IOThread::CreateGlobalHostResolver");
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   net::HostResolver::Options options;
 
-  // Use the concurrency override from the command-line, if any.
-  if (command_line.HasSwitch(switches::kHostResolverParallelism)) {
-    std::string s =
-        command_line.GetSwitchValueASCII(switches::kHostResolverParallelism);
-
-    // Parse the switch (it should be a positive integer formatted as decimal).
-    int n;
-    if (base::StringToInt(s, &n) && n > 0) {
-      options.max_concurrent_resolves = static_cast<size_t>(n);
-    } else {
-      LOG(ERROR) << "Invalid switch for host resolver parallelism: " << s;
-    }
-  }
-
   // Use the retry attempts override from the command-line, if any.
   if (command_line.HasSwitch(switches::kHostResolverRetryAttempts)) {
     std::string s =
         command_line.GetSwitchValueASCII(switches::kHostResolverRetryAttempts);
     // Parse the switch (it should be a non-negative integer).
     int n;
     if (base::StringToInt(s, &n) && n >= 0) {
       options.max_retry_attempts = static_cast<size_t>(n);
     } else {
       LOG(ERROR) << "Invalid switch for host resolver retry attempts: " << s;
@@ skipping 1255 matching lines @@
   net::QuicVersionVector supported_versions = net::QuicSupportedVersions();
   for (size_t i = 0; i < supported_versions.size(); ++i) {
     net::QuicVersion version = supported_versions[i];
     if (net::QuicVersionToString(version) == quic_version) {
       return version;
     }
   }
 
   return net::QUIC_VERSION_UNSUPPORTED;
 }