Attempting to re-land a small portion of this change... Simply add links from

net/http/http_proxy_client_socket_pool.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/http/http_proxy_client_socket_pool.h"
 
 #include <algorithm>
 
 #include "base/time.h"
 #include "base/values.h"
@@ skipping 379 matching lines @@
     SSLClientSocketPool* ssl_pool,
     NetLog* net_log)
     : transport_pool_(transport_pool),
       ssl_pool_(ssl_pool),
       base_(max_sockets, max_sockets_per_group, histograms,
             ClientSocketPool::unused_idle_socket_timeout(),
             ClientSocketPool::used_idle_socket_timeout(),
             new HttpProxyConnectJobFactory(transport_pool,
                                            ssl_pool,
                                            host_resolver,
-                                           net_log)) {}
+                                           net_log)) {
+  // We should always have a |transport_pool_| except in unit tests.
+  if (transport_pool_)
+    transport_pool_->AddLayeredPool(this);
+  if (ssl_pool_)
+    ssl_pool_->AddLayeredPool(this);
+}
 
-HttpProxyClientSocketPool::~HttpProxyClientSocketPool() {}
+HttpProxyClientSocketPool::~HttpProxyClientSocketPool() {
+  if (ssl_pool_)
+    ssl_pool_->RemoveLayeredPool(this);
+  // We should always have a |transport_pool_| except in unit tests.
+  if (transport_pool_)
+    transport_pool_->RemoveLayeredPool(this);
+}
 
 int HttpProxyClientSocketPool::RequestSocket(
     const std::string& group_name, const void* socket_params,
     RequestPriority priority, ClientSocketHandle* handle,
     const CompletionCallback& callback, const BoundNetLog& net_log) {
   const scoped_refptr<HttpProxySocketParams>* casted_socket_params =
       static_cast<const scoped_refptr<HttpProxySocketParams>*>(socket_params);
 
   return base_.RequestSocket(group_name, *casted_socket_params, priority,
                              handle, callback, net_log);
@@ skipping 18 matching lines @@
 
 void HttpProxyClientSocketPool::ReleaseSocket(const std::string& group_name,
                                               StreamSocket* socket, int id) {
   base_.ReleaseSocket(group_name, socket, id);
 }
 
 void HttpProxyClientSocketPool::Flush() {
   base_.Flush();
 }
 
+bool HttpProxyClientSocketPool::IsStalled() const {
+  return base_.IsStalled() ||
+      (transport_pool_ && transport_pool_->IsStalled()) ||
+      (ssl_pool_ && ssl_pool_->IsStalled());
+}
+
 void HttpProxyClientSocketPool::CloseIdleSockets() {
   base_.CloseIdleSockets();
 }
 
 int HttpProxyClientSocketPool::IdleSocketCount() const {
   return base_.idle_socket_count();
 }
 
 int HttpProxyClientSocketPool::IdleSocketCountInGroup(
     const std::string& group_name) const {
   return base_.IdleSocketCountInGroup(group_name);
 }
 
 LoadState HttpProxyClientSocketPool::GetLoadState(
     const std::string& group_name, const ClientSocketHandle* handle) const {
   return base_.GetLoadState(group_name, handle);
 }
 
+void HttpProxyClientSocketPool::AddLayeredPool(LayeredPool* layered_pool) {
+  base_.AddLayeredPool(layered_pool);
+}
+
+void HttpProxyClientSocketPool::RemoveLayeredPool(LayeredPool* layered_pool) {
+  base_.RemoveLayeredPool(layered_pool);
+}
+
 DictionaryValue* HttpProxyClientSocketPool::GetInfoAsValue(
     const std::string& name,
     const std::string& type,
     bool include_nested_pools) const {
   DictionaryValue* dict = base_.GetInfoAsValue(name, type);
   if (include_nested_pools) {
     ListValue* list = new ListValue();
     if (transport_pool_) {
       list->Append(transport_pool_->GetInfoAsValue("transport_socket_pool",
                                                    "transport_socket_pool",
@@ skipping 10 matching lines @@
 }
 
 base::TimeDelta HttpProxyClientSocketPool::ConnectionTimeout() const {
   return base_.ConnectionTimeout();
 }
 
 ClientSocketPoolHistograms* HttpProxyClientSocketPool::histograms() const {
   return base_.histograms();
 }
 
+bool HttpProxyClientSocketPool::CloseOneIdleConnection() {
+  if (base_.CloseOneIdleSocket())
+    return true;
+  return base_.CloseOneIdleConnectionInLayeredPool();
+}
+
 }  // namespace net