Clean up a few unused globals.

net/dns/host_resolver.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 "net/dns/host_resolver.h"
 
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "net/dns/dns_client.h"
 #include "net/dns/dns_config_service.h"
 #include "net/dns/host_cache.h"
 #include "net/dns/host_resolver_impl.h"
 
 namespace net {
 
 namespace {
 
 // Maximum of 6 concurrent resolver threads (excluding retries).
 // Some routers (or resolvers) appear to start to provide host-not-found if
 // too many simultaneous resolutions are pending.  This number needs to be
 // further optimized, but 8 is what FF currently does. We found some routers
 // that limit this to 6, so we're temporarily holding it at that level.
 const size_t kDefaultMaxProcTasks = 6u;
 
-// When configuring from field trial, do not allow
-const size_t kSaneMaxProcTasks = 20u;
-
 PrioritizedDispatcher::Limits GetDispatcherLimits(
     const HostResolver::Options& options) {
   PrioritizedDispatcher::Limits limits(NUM_PRIORITIES,
                                        options.max_concurrent_resolves);
 
   // If not using default, do not use the field trial.
   if (limits.total_jobs != HostResolver::kDefaultParallelism)
     return limits;
 
   // Default, without trial is no reserved slots.
@@ skipping 94 matching lines @@
 // static
 scoped_ptr<HostResolver>
 HostResolver::CreateDefaultResolver(NetLog* net_log) {
   return CreateSystemResolver(Options(), net_log);
 }
 
 HostResolver::HostResolver() {
 }
 
 }  // namespace net