Remove HttpServerProperies::GetWeakPtr().

ios/crnet/crnet_environment.mm

 // Copyright 2014 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 "ios/crnet/crnet_environment.h"
 
 #import <Foundation/Foundation.h>
 
 #include <utility>
 
@@ skipping 368 matching lines @@
   [[NSUserDefaults standardUserDefaults] registerDefaults:@{
     @"UserAgent" : [NSString stringWithUTF8String:user_agent.c_str()]
   }];
   main_context_->set_http_user_agent_settings(
       new net::StaticHttpUserAgentSettings(acceptable_languages, user_agent));
 
   main_context_->set_ssl_config_service(new net::SSLConfigServiceDefaults);
   main_context_->set_transport_security_state(
       new net::TransportSecurityState());
   http_server_properties_.reset(new net::HttpServerPropertiesImpl());
-  main_context_->set_http_server_properties(
-      http_server_properties_->GetWeakPtr());
+  main_context_->set_http_server_properties(http_server_properties_.get());
   // TODO(rdsmith): Note that the ".release()" calls below are leaking
   // the objects in question; this should be fixed by having an object
   // corresponding to URLRequestContextStorage that actually owns those
   // objects.  See http://crbug.com/523858.
   main_context_->set_host_resolver(
       net::HostResolver::CreateDefaultResolver(nullptr).release());
   main_context_->set_cert_verifier(
       net::CertVerifier::CreateDefault().release());
   main_context_->set_http_auth_handler_factory(
       net::HttpAuthHandlerRegistryFactory::CreateDefault(
@@ skipping 78 matching lines @@
 
   return user_agent_settings->GetUserAgent();
 }
 
 void CrNetEnvironment::ClearCache(ClearCacheCallback callback) {
   PostToNetworkThread(
       FROM_HERE,
       base::Bind(&net::ClearHttpCache, main_context_getter_,
                  network_io_thread_->task_runner(), base::BindBlock(callback)));
 }