Fix crash on IP address change.

net/socket/tcp_client_socket_pool_unittest.cc

Index: net/socket/tcp_client_socket_pool_unittest.cc
diff --git a/net/socket/tcp_client_socket_pool_unittest.cc b/net/socket/tcp_client_socket_pool_unittest.cc
index a41fb88df4b1f0e913fc1f17d9e4d0bdc77b5949..e7c8a9fc4fcfc11bff271d30a801fa46a7fdd704 100644
--- a/net/socket/tcp_client_socket_pool_unittest.cc
+++ b/net/socket/tcp_client_socket_pool_unittest.cc
@@ -8,6 +8,7 @@
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "net/base/mock_host_resolver.h"
+#include "net/base/mock_network_change_notifier.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "net/socket/client_socket.h"
@@ -246,7 +247,8 @@ class TCPClientSocketPoolTest : public ClientSocketPoolTest {
                                       kMaxSocketsPerGroup,
                                       "TCPUnitTest",
                                       host_resolver_,
-                                      &client_socket_factory_)) {
+                                      &client_socket_factory_,
+                                      &notifier_)) {
   }
 
   int StartRequest(const std::string& group_name, RequestPriority priority) {
@@ -257,6 +259,7 @@ class TCPClientSocketPoolTest : public ClientSocketPoolTest {
   TCPSocketParams ignored_socket_params_;
   scoped_refptr<MockHostResolver> host_resolver_;
   MockClientSocketFactory client_socket_factory_;
+  MockNetworkChangeNotifier notifier_;
   scoped_refptr<TCPClientSocketPool> pool_;
 };
 
@@ -625,6 +628,32 @@ TEST_F(TCPClientSocketPoolTest, FailingActiveRequestWithPendingRequests) {
     EXPECT_EQ(ERR_CONNECTION_FAILED, requests_[i]->WaitForResult());
 }
 
+TEST_F(TCPClientSocketPoolTest, ResetIdleSocketsOnIPAddressChange) {
+  TestCompletionCallback callback;
+  ClientSocketHandle handle;
+  TCPSocketParams dest("www.google.com", 80, LOW, GURL(), false);
+  int rv = handle.Init("a", dest, LOW, &callback, pool_, NULL);
+  EXPECT_EQ(ERR_IO_PENDING, rv);
+  EXPECT_FALSE(handle.is_initialized());
+  EXPECT_FALSE(handle.socket());
+
+  EXPECT_EQ(OK, callback.WaitForResult());
+  EXPECT_TRUE(handle.is_initialized());
+  EXPECT_TRUE(handle.socket());
+
+  handle.Reset();
+
+  // Need to run all pending to release the socket back to the pool.
+  MessageLoop::current()->RunAllPending();
+
+  // Now we should have 1 idle socket.
+  EXPECT_EQ(1, pool_->IdleSocketCount());
+
+  // After an IP address change, we should have 0 idle sockets.
+  notifier_.NotifyIPAddressChange();
+  EXPECT_EQ(0, pool_->IdleSocketCount());
+}
+
 TEST_F(TCPClientSocketPoolTest, BackupSocketConnect) {
   // Case 1 tests the first socket stalling, and the backup connecting.
   MockClientSocketFactory::ClientSocketType case1_types[] = {