Extracting NetLog inner classes into their own classes.

net/socket/socket_test_util.cc

Index: net/socket/socket_test_util.cc
diff --git a/net/socket/socket_test_util.cc b/net/socket/socket_test_util.cc
index 4b263de33b58feec7856acec2a79476ce4be9448..15c26f8c028cf0bbfe7faabed5c2ac480fae0108 100644
--- a/net/socket/socket_test_util.cc
+++ b/net/socket/socket_test_util.cc
@@ -26,6 +26,7 @@
 #include "net/http/http_network_session.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
+#include "net/log/net_log_source.h"
 #include "net/log/net_log_source_type.h"
 #include "net/socket/socket.h"
 #include "net/socket/websocket_endpoint_lock_manager.h"
@@ -711,7 +712,7 @@ MockClientSocketFactory::CreateDatagramClientSocket(
     DatagramSocket::BindType bind_type,
     const RandIntCallback& rand_int_cb,
     NetLog* net_log,
-    const NetLog::Source& source) {
+    const NetLogSource& source) {
   SocketDataProvider* data_provider = mock_data_.GetNext();
   std::unique_ptr<MockUDPClientSocket> socket(
       new MockUDPClientSocket(data_provider, net_log));
@@ -727,7 +728,7 @@ MockClientSocketFactory::CreateTransportClientSocket(
     const AddressList& addresses,
     std::unique_ptr<SocketPerformanceWatcher> socket_performance_watcher,
     NetLog* net_log,
-    const NetLog::Source& source) {
+    const NetLogSource& source) {
   SocketDataProvider* data_provider = mock_data_.GetNext();
   std::unique_ptr<MockTCPClientSocket> socket(
       new MockTCPClientSocket(addresses, net_log, data_provider));
@@ -1631,7 +1632,7 @@ int MockTransportClientSocketPool::RequestSocket(
   last_request_priority_ = priority;
   std::unique_ptr<StreamSocket> socket =
       client_socket_factory_->CreateTransportClientSocket(
-          AddressList(), NULL, net_log.net_log(), NetLog::Source());
+          AddressList(), NULL, net_log.net_log(), NetLogSource());
   MockConnectJob* job = new MockConnectJob(std::move(socket), handle, callback);
   job_list_.push_back(base::WrapUnique(job));
   handle->set_pool_id(1);