Fix preconnect crash on synchronous socket error.

net/socket/client_socket_pool_base_unittest.cc

 // Copyright (c) 2010 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/socket/client_socket_pool_base.h"
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/platform_thread.h"
@@ skipping 2907 matching lines @@
 }
 
 TEST_F(ClientSocketPoolBaseTest, RequestSocketsSynchronousError) {
   CreatePool(kDefaultMaxSockets, kDefaultMaxSocketsPerGroup);
   connect_job_factory_->set_job_type(TestConnectJob::kMockFailingJob);
 
   pool_->RequestSockets("a", &params_, kDefaultMaxSocketsPerGroup,
                         BoundNetLog());
 
   ASSERT_FALSE(pool_->HasGroup("a"));
+
+  connect_job_factory_->set_job_type(
+      TestConnectJob::kMockAdditionalErrorStateJob);
+  pool_->RequestSockets("a", &params_, kDefaultMaxSocketsPerGroup,
+                        BoundNetLog());
+
+  ASSERT_FALSE(pool_->HasGroup("a"));
 }
 
 TEST_F(ClientSocketPoolBaseTest, RequestSocketsMultipleTimesDoesNothing) {
   CreatePool(4, 4);
   connect_job_factory_->set_job_type(TestConnectJob::kMockPendingJob);
 
   pool_->RequestSockets("a", &params_, 2, BoundNetLog());
 
   ASSERT_TRUE(pool_->HasGroup("a"));
   EXPECT_EQ(2, pool_->NumConnectJobsInGroup("a"));
@@ skipping 159 matching lines @@
   EXPECT_EQ(1, pool_->IdleSocketCountInGroup("a"));
   EXPECT_EQ(0, pool_->NumActiveSocketsInGroup("a"));
   EXPECT_EQ(0, pool_->NumConnectJobsInGroup("b"));
   EXPECT_EQ(1, pool_->IdleSocketCountInGroup("b"));
   EXPECT_EQ(0, pool_->NumActiveSocketsInGroup("b"));
 }
 
 }  // namespace
 
 }  // namespace net